Founder Guide: UK Compliance for ASA, SAFE and Convertible Loan Note Financings

Raising money through an Advance Subscription Agreement (ASA), SAFE-style instrument or Convertible Loan Note (CLN) can feel simpler than completing a priced equity round.

The investor signs an agreement.

The money arrives.

The startup continues building.

But signing the financing document is not necessarily the end of the compliance process.

A UK startup may need to consider:

• financial promotion rules;
• investor communications;
• the company's Articles of Association;
• existing shareholder agreements;
• directors' authority to allot shares or grant conversion rights;
• statutory pre-emption rights;
• board and shareholder approvals;
• Companies House filings;
• statutory registers;
• SEIS/EIS requirements;
• and accounting treatment.

Unlike the United States, the UK does not have a direct equivalent of SEC Form D that every startup files after relying on a private-placement exemption.

Instead, UK compliance is spread across financial-services law, company law, tax rules and corporate filings.

This guide provides founders with a practical checklist for managing that process.

It is not a substitute for legal or tax advice, particularly where a fundraising campaign is promoted publicly, retail investors are involved, SEIS/EIS treatment is expected, overseas investors participate, or the financing terms are unusual.

1. Check the Financial Promotion Rules Before Approaching Investors

The first compliance question can arise before the investment is signed.

Under section 21 of the Financial Services and Markets Act 2000 — FSMA — a person generally must not, in the course of business, communicate an invitation or inducement to engage in investment activity unless:

• the communicator is appropriately authorised;
• the content of the communication is approved by an authorised person where permitted; or
• an exemption applies.

This matters because a financial promotion can take many forms.

It may include:

• a fundraising email;
• pitch materials;
• an investment memorandum;
• a website;
• online advertising;
• social media;
• or other communications designed to persuade someone to invest.

A founder should therefore not assume:

“We are a private startup, so securities marketing rules do not apply.”

Before circulating fundraising materials, determine how the communication can lawfully be made.

2. Determine Which Financial Promotion Route Applies

There is no direct UK equivalent of choosing between U.S. Regulation D Rule 506(b) and Rule 506(c).

Instead, founders need to determine whether:

the communication falls outside the financial promotion restriction;

an exemption under the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 applies;

or

the promotion needs to be communicated or approved through an authorised route.

Relevant exemptions can include communications to certain:

• high-net-worth individuals;
• sophisticated investors;
• self-certified sophisticated investors;
• investment professionals;
• high-net-worth companies;
• and other specified recipients.

Each exemption has its own requirements.

Do not assume that calling someone an:

“angel investor”

automatically makes the communication exempt.

3. Identify Who Will Receive the Fundraising Materials

The recipient matters.

For example, the Financial Promotion Order contains specific exemptions relating to certain high-net-worth and sophisticated investors.

The current high-net-worth individual exemption includes a prescribed investor statement and financial criteria.

The sophisticated-investor exemptions operate differently and can depend on certification or self-certification and the type of investment being promoted.

Corporate investors can also fall under separate exemptions in appropriate circumstances.

Before relying on an exemption, the startup should record:

Investor legal name

Individual or entity

Investor address / jurisdiction

Financial promotion exemption relied upon, where applicable

Required investor statement or certification

Date the communication was made

This is particularly important where the company is approaching multiple angel investors.

4. Be Careful With Public Fundraising

Public fundraising creates additional risk.

Posting:

“We are raising £1 million — DM me to invest”

on LinkedIn is not necessarily equivalent to privately discussing a financing with an existing venture capital investor.

The financial promotion regime can apply to online communications, websites and social media.

The key issue is not simply whether the company is private.

The question is whether the communication constitutes an invitation or inducement to engage in investment activity and, if so, whether it can lawfully be communicated.

Before publicly advertising a round, obtain appropriate legal advice on the proposed communications.

5. Choose the Financing Instrument

UK startups may raise early-stage capital using several instruments.

Common structures include:

Advance Subscription Agreement — ASA

The investor pays money now for shares to be issued later under specified conditions.

SAFE-style instrument

A UK startup may use a SAFE or SAFE-inspired agreement, particularly where U.S. investors or accelerators are involved.

However, a SAFE is a U.S.-developed instrument and should not automatically be treated as equivalent to a UK ASA.

Convertible Loan Note — CLN

A CLN begins as debt and may later convert into shares.

It can contain:

• interest;
• maturity;
• conversion triggers;
• valuation caps;
• discounts;
• repayment provisions;
• and other debt terms.

Direct equity subscription

The investor subscribes directly for shares at closing.

The legal, tax and accounting consequences differ between these structures.

6. Complete the Financing Documents

Before accepting or finalising the investment, prepare the relevant documents.

Depending on the transaction, these may include:

• ASA;
• SAFE-style agreement;
• Convertible Loan Note;
• Loan Note Instrument;
• Subscription Agreement;
• investment agreement;
• board minutes or written resolutions;
• shareholder resolutions;
• amended Articles of Association;
• shareholder consents or waivers;
• investor representations;
• SEIS/EIS documentation;
• and financial-promotion investor statements where applicable.

The company should maintain a clear record of:

Investor legal name

Investor address and jurisdiction

Investment amount

Instrument type

Date documents were signed

Date funds were received

Conversion terms

Valuation cap, if applicable

Discount, if applicable

Longstop or maturity date

SEIS/EIS status, if relevant

7. Review the Articles and Shareholders' Agreement

Before signing a convertible financing, review the company's existing corporate documents.

These may restrict:

• issuance of new shares;
• creation of new share classes;
• borrowing;
• grant of conversion rights;
• investor rights;
• pre-emption;
• reserved matters;
• or amendments to share capital.

A startup should therefore check:

Articles of Association

Shareholders' Agreement

Existing investment agreements

Previous ASA / SAFE / CLN documents

Existing shareholder resolutions

Do not assume that directors can sign a new financing simply because all founders agree commercially.

8. Check Directors' Authority to Allot Shares or Grant Conversion Rights

The Companies Act 2006 regulates directors' power to:

• allot shares; and
• grant rights to subscribe for or convert securities into shares.

This matters for convertible financings.

A private company with only one class of shares may benefit from the statutory power under section 550, unless its Articles prohibit or restrict that power.

In other cases, authority may need to come from:

• the Articles; or
• a shareholder resolution under section 551.

A founder should therefore ask:

Do the directors have authority for this financing?

and not only:

Will they have authority when the instrument eventually converts?

This should be checked before execution.

9. Check Pre-emption Rights

Existing shareholders may have rights that need to be addressed before new equity securities or conversion rights are granted.

Statutory pre-emption rights under the Companies Act 2006 can apply to certain allotments of equity securities.

For these purposes, equity securities can include not only ordinary shares but also certain rights to subscribe for or convert securities into ordinary shares.

Additional contractual pre-emption rights may also exist under:

• the Articles;
• Shareholders' Agreement;
• or previous financing documents.

Depending on the circumstances, the company may need:

• an offer to existing shareholders;
• a waiver;
• or a valid disapplication of pre-emption rights.

Do not wait until conversion to discover that existing shareholder rights were relevant when the financing instrument was granted.

10. Obtain the Required Corporate Approvals

The precise approvals depend on the company and transaction.

They may include:

Board approval

For matters such as:

• approving the financing;
• approving the instrument;
• authorising execution;
• approving the receipt of funds;
• and later approving the allotment of shares.

Shareholder approval

Potentially required for:

• authority to allot;
• disapplication of pre-emption rights;
• amendment of Articles;
• creation of new share rights;
• or reserved matters under existing agreements.

Investor / shareholder consents

Existing financing documents may require consent from specific investors.

Maintain signed copies of all approvals with the financing documents.

11. Record the Investment Correctly in the Accounts

Receiving investor money does not mean the company has earned revenue.

For example:

Investor transfers £250,000 under an ASA

The company should not record:

Revenue +£250,000

merely because cash entered the bank account.

The accounting classification depends on:

• the instrument's contractual terms;
• repayment rights;
• conversion provisions;
• and the accounting framework applied by the company.

For example:

• a CLN will generally begin with liability characteristics;
• a direct share subscription normally creates equity once shares are issued;
• and ASA or SAFE-style classification requires analysis of the contractual terms.

The legal document and accounting treatment should agree.

12. Reconcile Investor Funds

For each financing, reconcile:

Signed agreement

↓

Investor

↓

Amount committed

↓

Amount received

↓

Bank transaction

↓

Accounting entry

↓

Cap table / financing schedule

For example:

Investor A — ASA — £100,000
Investor B — ASA — £150,000
Investor C — CLN — £250,000

Total financing received:

£500,000

The accounting records should reconcile to the executed agreements and bank statements.

This becomes especially important during the next funding round.

13. Determine Whether Shares Have Actually Been Allotted

This is one of the biggest differences between UK startup instruments.

Receiving money does not always mean shares have been issued.

For example:

ASA

Investor transfers:

£100,000

Shares may be issued later.

CLN

Investor lends:

£100,000

The note may convert into shares at a future financing.

Direct equity subscription

Investor transfers:

£100,000

and shares are allotted at closing.

Founders should therefore distinguish:

Money received

from:

Shares allotted

from:

Investor entered in the register of members

These events may occur on different dates.

14. File SH01 After an Allotment

When a limited company allots shares, it generally must file:

Form SH01 — Return of Allotment of Shares

with Companies House.

The deadline is generally:

within one month of the allotment.

SH01 includes a statement of capital.

This requirement can arise when:

• a direct equity investment closes;
• an ASA converts;
• a SAFE-style instrument converts;
• or a Convertible Loan Note converts into newly allotted shares.

The important trigger is the allotment of shares.

Example: ASA Conversion

Suppose a startup receives:

£300,000

under an ASA on:

1 March

No shares are issued on that date.

The ASA converts following the company's next funding round.

New shares are allotted to the ASA investors on:

15 September

The relevant Companies House allotment filing is triggered by the September share allotment.

The company would generally need to file the SH01:

within one month of 15 September.

The March cash receipt did not itself create an SH01 filing simply because money entered the company's bank account.

15. Update the Register of Members

Every company must maintain a register of its members.

When an investor actually becomes a shareholder, the company's statutory records need to reflect that ownership.

After a financing or conversion, reconcile:

Board approval

↓

Share allotment

↓

SH01

↓

Register of members

↓

Cap table

↓

Accounting records

These should all tell the same ownership story.

16. Update the Cap Table

The cap table should distinguish between:

Issued shares

Shares that legally exist and have been issued to shareholders.

Future or potential dilution

This may include:

• outstanding options;
• ASAs;
• SAFEs;
• Convertible Loan Notes;
• warrants;
• and other rights to acquire shares.

An ASA investor who has paid £100,000 but has not yet received shares should not automatically be shown as though the final number of shares has already been legally allotted.

However, the potential dilution should still be modelled.

For fundraising, founders often need both:

Legal issued cap table

and

Fully diluted / financing cap table

17. Check SEIS and EIS Before Closing

If investors expect SEIS or EIS tax relief, the tax analysis should happen before the transaction is finalised.

Do not assume:

“It's an early-stage startup, so the investment will qualify.”

SEIS/EIS contain detailed rules concerning:

• company eligibility;
• investor eligibility;
• qualifying activities;
• share rights;
• use of funds;
• risk to capital;
• investment limits;
• and timing.

The financing documents need to be consistent with the intended tax treatment.

18. Be Particularly Careful With ASAs and SEIS/EIS

HMRC recognises the use of Advance Subscription Agreements in the venture-capital scheme context.

However, an ASA intended for SEIS relief should not function as a loan.

HMRC's current guidance expects a qualifying ASA, among other things, to:

• not permit the subscription payment to be refunded;
• not be capable of variation, cancellation or assignment;
• bear no interest;
• and contain a longstop date by which shares must be issued.

HMRC generally expects the longstop date to be:

no more than six months

from the date of the ASA where Advance Assurance is sought.

If the company wants SEIS Advance Assurance for an ASA, HMRC says it should apply before entering into the ASA.

SEIS relief itself arises from the qualifying share issue — not simply from the earlier transfer of money under the ASA.

19. Complete SEIS/EIS Compliance After the Share Issue

Advance Assurance is not the end of the SEIS/EIS process.

After qualifying shares have been issued and the relevant statutory conditions are met, the company needs to complete the appropriate HMRC compliance process.

Depending on the scheme, this can involve:

SEIS1

or

EIS1

compliance statements.

Once HMRC authorises the company, the relevant investor certificates can then be issued.

Therefore:

Advance Assurance

is not the same as:

Investor tax-relief certificate.

Keep the SEIS/EIS records with the financing file.

20. Consider Overseas Investors Separately

UK startups frequently raise from:

• U.S. angels;
• U.S. venture funds;
• European investors;
• Middle Eastern investors;
• and other overseas investors.

UK compliance is not necessarily the only legal regime involved.

Offering securities to an investor in another country can potentially trigger that jurisdiction's securities laws.

For example, fundraising from U.S. investors may require separate U.S. securities-law analysis even where the issuer is a UK company.

Do not assume:

“The company is incorporated in England, so only UK rules matter.”

Cross-border fundraising should be reviewed jurisdiction by jurisdiction.

21. Be Careful With Finders and Introducers

A startup may use:

• fundraising advisers;
• introducers;
• placement agents;
• consultants;
• or individuals who connect founders with investors.

If someone is being paid based on successful investment, founders should not assume the arrangement is merely a marketing expense.

Depending on the activities performed, UK financial-services regulation may become relevant.

Before paying success-based fundraising compensation, confirm that the arrangement is legally appropriate.

Keep:

• the engagement agreement;
• fee calculation;
• invoices;
• investor introductions;
• and payment records

with the financing documentation.

22. Maintain a Complete Financing File

For every ASA, SAFE, CLN or equity financing, retain a complete file.

At minimum, consider keeping:

• executed financing agreements;
• Subscription Agreements;
• board approvals;
• shareholder resolutions;
• shareholder consents;
• pre-emption waivers;
• Articles of Association;
• Shareholders' Agreement;
• investor representations;
• financial-promotion exemption documentation;
• investor statements or certifications where relevant;
• wire confirmations;
• bank statements;
• accounting entries;
• cap table;
• register of members;
• SH01 filings;
• Companies House filing confirmations;
• SEIS/EIS Advance Assurance;
• SEIS1/EIS1 records;
• investor tax certificates;
• and correspondence with legal and tax advisers.

A financing may remain relevant for many years.

Do not rely on the founder's inbox as the company's financing record.

23. Monitor the Instrument After Closing

A convertible financing is not necessarily finished when the money arrives.

The company should track:

Conversion trigger

For example:

next qualifying financing

Longstop date

Particularly important for ASAs.

Maturity

Relevant for CLNs.

Interest

Relevant for interest-bearing convertible debt.

Valuation cap

Relevant to conversion calculations.

Discount

Relevant to conversion price.

SEIS/EIS conditions

Where applicable.

Corporate approvals

Required when the relevant conversion occurs.

Companies House filings

Required following actual share allotment.

Create a financing schedule rather than relying solely on the signed PDF.

Example: £500,000 UK Startup Financing

Suppose a UK software startup raises:

Investor A — £100,000 ASA

Investor B — £150,000 ASA

Investor C — £250,000 Convertible Loan Note

Total cash received:

£500,000

The company should not simply record £500,000 of revenue and consider the fundraising complete.

Instead, it should track:

Legal

What agreements were executed?

Financial promotions

How were the investments communicated and which rules or exemptions applied?

Corporate authority

Did the directors have authority to enter into the instruments and grant the relevant rights?

Pre-emption

Were existing shareholder rights considered?

Accounting

How should each instrument be classified?

Tax

Are Investors A or B expecting SEIS/EIS relief?

Cap table

What is issued today and what is potential future dilution?

Conversion

When will each instrument convert?

Companies House

When shares are eventually allotted, is SH01 required?

Statutory records

When does each investor become a member?

This is why startup financing compliance should be treated as a process, not a single document.

Common Founder Mistakes

Founder Checklist

For every ASA, SAFE, Convertible Loan Note or equity financing:

☐ Identify how the fundraising communication complies with UK financial promotion rules.

☐ Determine whether an exemption or authorised approval route is being relied upon.

☐ Record the relevant investor classification and supporting documentation.

☐ Review the Articles of Association.

☐ Review the Shareholders' Agreement.

☐ Confirm directors' authority to allot shares or grant subscription/conversion rights.

☐ Check statutory and contractual pre-emption rights.

☐ Obtain required board approvals.

☐ Obtain required shareholder approvals or waivers.

☐ Execute the financing documents.

☐ Record investor legal name, investment amount and instrument.

☐ Reconcile the funds received to the bank account.

☐ Record the financing correctly in the accounts.

☐ Update the financing schedule and fully diluted cap table.

☐ Determine whether shares have actually been allotted.

☐ If shares are allotted, file SH01 within the applicable one-month deadline.

☐ Update the register of members.

☐ Update the issued cap table.

☐ Complete SEIS/EIS requirements where applicable.

☐ Review overseas securities-law requirements for foreign investors.

☐ Save all legal, tax, accounting and Companies House documentation.

☐ Monitor conversion, maturity and longstop dates.

Important Timing Rule

Do not calculate UK fundraising compliance from one universal date.

Unlike the U.S. Form D system, there is no single UK “Date of First Sale” deadline that controls every startup financing.

Different events create different obligations.

For example:

Fundraising communication

→ financial promotion analysis may already be required.

ASA / CLN execution

→ corporate authority and approvals may be relevant.

Cash received

→ accounting and reconciliation are required.

Shares allotted

→ SH01 deadline generally starts.

Investor entered in register of members

→ legal ownership records change.

SEIS/EIS conditions satisfied

→ HMRC compliance process may proceed.

The correct question is therefore not:

“What is the UK Form D deadline?”

There is no direct equivalent.

The correct question is:

“What legal, tax, accounting and Companies House events has this financing triggered?”

How Agbis Helps

UK Startup Financing Compliance Review

We help startups organise the financial and corporate-record side of fundraising.

We can review:

ASA / SAFE / CLN accounting

Investor payment reconciliations

Share capital accounting

Cap table reconciliations

Conversion schedules

Companies House accounting records

SEIS/EIS financial information

Fundraising due diligence

Investor-ready bookkeeping

Financial statements

Multi-round financing reconciliations

Legal structuring, financial-promotion compliance, securities law, corporate approvals and SEIS/EIS tax eligibility should also be reviewed by appropriately qualified UK legal and tax advisers.

Disclaimer: This article is for general information only and is not legal, tax or investment advice. Financing, financial-promotion, company-law and SEIS/EIS requirements depend on the facts of each transaction. Consult qualified UK legal and tax advisers.