UK Crowdfunding Marketing Rules: Who Must Approve Your Financial Promotion Under s21 FSMA?

In the UK, any marketing that invites or induces people to invest in a crowdfunding raise is a "financial promotion," and under section 21 of the Financial Services and Markets Act 2000 an unauthorised company may only communicate it if an FCA-authorised person has approved its content or a specific exemption applies. For most founders raising on Crowdcube or Seedrs, that means the platform (itself FCA-authorised) reviews and approves the campaign page and the investor-facing marketing that sits around it — the emails, ads, social posts and videos that drive traffic to the pitch.

The approval question is only half of it. Equity crowdfunding shares are typically non-readily realisable securities, which puts them inside the FCA's restricted mass market investment rules: prescribed risk warnings, investor categorisation, appropriateness checks, a 24-hour cooling-off period for first-time investors with a firm, and a ban on incentives to invest. This guide sets out how those rules shape a UK campaign's marketing plan. It is informational only; the regime is detailed, and issuers settle specifics with their platform's compliance team and UK-qualified counsel.

What Counts as a Financial Promotion?

Section 21(1) FSMA provides that a person must not, in the course of business, communicate an invitation or inducement to engage in investment activity. Section 21(2) lifts that restriction only if the communicator is an authorised person or the content has been approved by one. The test is functional, not formal: the question is whether the communication invites or induces investment, not what channel it uses or what it is called.

In practice, that captures most of what a pre-launch and live crowdfunding campaign produces:

• Emails to a customer or waitlist file announcing the raise or the valuation
• Paid social and search ads pointing to the pitch page
• Organic posts from the company and its founders describing the opportunity
• Pitch videos, webinar recordings and press releases that describe the investment terms
• Posts by paid influencers or ambassadors promoting the round

Brand marketing that says nothing about investing generally falls outside the definition; copy that mentions the round, valuation, returns, tax relief or a call to invest does not.

Who Can Approve a Crowdfunding Promotion?

The issuing company is almost never FCA-authorised, so it has three routes: have the promotion approved by an authorised person, have an authorised person communicate it, or fit it within an exemption in the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (the "FPO").

Two structural points matter for planning. First, under the FCA's approver regime an authorised firm needs a specific FCA permission — the "approver gateway" — before it can approve financial promotions for unauthorised businesses, which narrows the pool of third-party approvers. Second, each platform sets its own policy on which off-platform assets it will review, how long review takes and whether it approves content produced by an external agency. Issuers typically confirm that policy before building a content calendar, because approval turnaround becomes the pacing item for every asset.

The FPO exemptions carry their own conditions — statements the recipient must have signed, prescribed wording, and limits on the type of investment. Relying on one for a public campaign is uncommon, and whether any exemption fits a given communication is a question for counsel.

The Restricted Mass Market Investment Rules

Most equity crowdfunding shares are non-readily realisable securities (NRRS). Since the FCA's 2023 reforms, NRRS are classed as restricted mass market investments, governed by COBS 4.12A (Promotion of restricted mass market investments), alongside the general direct-offer rules in COBS 4.7 (Direct offer financial promotions). The obligations fall on the authorised firm communicating or approving the promotion, but they shape every asset the issuer produces.

The 24-hour cooling-off period is the rule that most changes UK campaign mechanics compared with other markets. It rewards investor pipelines built before launch: a prospect who has already registered, been categorised and cleared the cooling-off window on the platform can act on launch day, while a cold click from a launch-day ad cannot.

Social Media, Influencers and Founder Posts

The FCA's finalised guidance on financial promotions on social media (FG24/1, published in 2024) applies the same rules to every format, including short posts, stories and video. The practical consequences for issuers:

• Founder posts are promotions. A founder's personal LinkedIn post describing the round and linking to the pitch is a communication in the course of business, not a private opinion.
• Character limits are not an exemption. If the prescribed risk warning cannot be displayed properly, the format is generally unsuitable for the promotion.
• Paid influencers carry personal exposure. Under section 25 FSMA, communicating in breach of section 21 is a criminal offence carrying up to two years' imprisonment, a fine, or both on indictment. That applies to the person who communicates, not only the issuer.
• Reposts and shares count. Sharing an approved promotion can amount to a new communication, and approvals are typically given for specific content in a specific form.

What Happens If a Promotion Breaches Section 21?

Beyond the criminal offence in section 25, section 30 FSMA provides that where a person enters into a controlled agreement in consequence of an unlawful communication, the agreement is unenforceable against them and they are entitled to recover money paid and compensation for loss. For an issuer, that is a contingent liability attached to every investment traced back to an unapproved asset. Platforms also typically reserve the right to pause or withdraw a campaign over unapproved marketing.

A Compliant UK Campaign Marketing Sequence

1. Confirm the approval path. Establish with the platform which assets it will approve, the review lead time and whether external agency content is accepted. If a third-party s21 approver is needed, confirm it holds the approver permission.
2. Separate brand from investment content. Pre-launch audience building that promotes the product, not the investment, sits outside the financial-promotion definition; the moment copy references the round, it enters the approval workflow.
3. Build the pre-registration pipeline. Drive interested prospects to register with the platform early so categorisation, appropriateness and the 24-hour cooling-off window are cleared before launch.
4. Design every asset around the risk warning. Build templates for each ad and social format with the prescribed warning and the "Take 2 mins to learn more" link in place before copywriting starts.
5. Submit in batches. Plan launch-week emails, ads and posts as a batch for approval, with a buffer for revisions, rather than drafting reactively during the raise.
6. Brief founders, team and ambassadors. Everyone posting about the round works from approved copy; no improvised posts about valuation, returns or tax relief.
7. Keep an approval log. Record each asset, its approved version, approver and date. It is the evidence trail if the platform or the FCA asks.

Tax relief messaging deserves a specific check. Many UK raises reference SEIS or EIS eligibility, and statements about relief are part of the promotion. Issuers typically obtain HMRC advance assurance before referencing it and have the wording reviewed with the rest of the content.

How the UK Regime Differs From US Crowdfunding Rules

US founders expanding to the UK should not carry over US assumptions. In the US, Regulation Crowdfunding limits issuer advertising after filing to a short notice pointing to the intermediary, while Rule 506(c) permits general solicitation to accredited investors — see our guide to SEC advertising rules for 506(c) offerings. The UK has no "accredited-only" general solicitation track equivalent to 506(c); it regulates the content and approval of each promotion instead. For cross-border structuring from the other direction, see international founders raising from US investors.

Frequently Asked Questions

Does my Crowdcube or Seedrs campaign marketing need FCA approval?

Marketing that invites or induces investment is a financial promotion under section 21 FSMA, so an unauthorised issuer generally needs an FCA-authorised person to approve it unless an exemption applies. In practice, the crowdfunding platform typically reviews and approves the campaign page and much of the related marketing. Each platform sets its own policy on which off-platform assets it will review, so issuers confirm that before launch.

Can a UK founder post about their crowdfunding round on LinkedIn?

A founder's post describing the round and linking to the pitch is generally a financial promotion made in the course of business. It needs to be approved content, carry the prescribed risk warning and comply with the FCA's rules for social media set out in FG24/1. Founders typically post from pre-approved copy rather than improvising.

What is the 24-hour cooling-off period in UK crowdfunding?

Under COBS 4.12A, when a retail client who is a first-time investor with a firm requests a direct offer for a restricted mass market investment, at least 24 hours must elapse before the direct offer is communicated. The client also receives a personalised risk warning. This is why UK campaigns place heavy weight on registering prospects with the platform before launch.

Can I offer a referral bonus to investors in a UK equity crowdfunding raise?

COBS 4.12A prohibits a promotion relating to a restricted mass market investment from offering retail clients any monetary or non-monetary incentive to invest. Most equity crowdfunding shares fall into that category, so refer-a-friend bonuses and investment-linked giveaways are a compliance question to settle with the platform and counsel before they appear in any creative.

What happens if a crowdfunding promotion is not approved?

Communicating an unapproved promotion in breach of section 21 is a criminal offence under section 25 FSMA. Under section 30, an investment agreement entered into as a result of an unlawful communication is unenforceable against the investor, who may recover money paid and compensation for loss. Platforms may also pause or withdraw a campaign.

Is Growth Turbine authorised to approve financial promotions?

No. Growth Turbine is a marketing agency and is not an FCA-authorised person. It does not make or approve financial promotions, and any promotion produced with its support must be made or approved by an authorised person, such as the issuer's crowdfunding platform, or rely on an exemption confirmed by the issuer's counsel.

Planning a UK Crowdfunding Raise

The UK regime front-loads the work: approval lead times, risk-warning-ready templates and a pre-registered investor pipeline decide what a campaign can do on launch day. Growth Turbine has provided marketing support across more than $490M in aggregate issuer-reported totals, with 210+ fundraising campaigns managed supported across Reg-CF, Reg-D 506(c), Reg-A+ and tokenized securities offerings, spanning 23+ crowdfunding platforms and 25+ industries. Growth Turbine is not an FCA-authorised person; all UK promotions must be made or approved by one.

For how Growth Turbine supports UK issuers on campaign strategy, creative and audience building within the platform's approval process, see our UK crowdfunding marketing page and our equity crowdfunding marketing services. To discuss a UK raise, contact our team.

Disclaimer: The information provided in this article is for educational and informational purposes only and does not constitute legal, financial, or investment advice. Always consult with qualified legal counsel and financial advisors before launching a capital raise.