Coinbase vs the FCA's Authorised-Venue Rule: Will UK Crypto Users Lose DeFi Access in 2027?

Coinbase's head of policy for Europe, Katie Harries, argued on 22 October 2026 that an FCA rule could stop UK-regulated crypto platforms offering customers access to DeFi. The rule requires UK retail orders to be executed on a UK-authorised venue. DeFi protocols usually have nobody who can be authorised, so she warns the effect "could be a de facto ban." The FCA hasn't said DeFi access is banned.

It's a narrow, technical point with surprisingly practical consequences. If you use a UK app to buy crypto, the rule decides where your order can actually be filled. That affects the prices you get, which tokens you can trade, and whether a regulated app can ever plug you into a decentralised exchange.

What does the FCA rule actually say?

Under the FCA's final crypto rules, published on 30 June 2026, orders for UK retail and elective professional clients must be executed on a UK-authorised execution venue, meaning an authorised crypto trading platform or principal dealer. For other arranging activity, firms must take all reasonable steps to the same end. It applies from 25 October 2027.

The idea first appeared in consultation paper CP25/40, published in December 2025, which proposed that intermediaries route UK retail orders to UK-authorised venues. Law firm Simmons & Simmons' summary of the final policy statement, PS26/11, says the requirement survived and was extended to other arranging activity. Harries described it in her Cointelegraph piece as the FCA expecting platforms "to ensure customer orders are only executed on an FCA-authorized venue."

There's a related rule worth knowing. Retail customers will generally only be able to access cryptoassets admitted to trading on at least one UK-authorised platform, with an exception for UK-issued qualifying stablecoins. Together, the two rules pull trading activity onshore.

Photo via Unsplash

Why does Coinbase say it could block DeFi?

Because a decentralised exchange is software, not a company. Harries argues that DeFi protocols "do not have a person behind them who could become authorized", so a UK platform couldn't route a customer's trade to one without breaching the venue rule. No rule bans DeFi integrations outright, she accepts, but the effect could be the same.

Her proposed fix is to regulate the access point rather than the technology. Platforms could warn customers when they're leaving the regulated environment, require consent, and assess the protocol's operational and governance risks. She compares it to "super apps" that already offer products with different protections. She also points to the EU, where ESMA has proposed letting regulated firms offer DeFi access, and argues a ban would simply push activity beyond the FCA's practical view.

The timing isn't accidental. On 21 October the FCA opened GC26/7, a consultation on how its existing rules on operational resilience and financial crime apply to firms using DeFi. It closes on 18 November 2026, with final guidance planned for January 2027. GC26/7 doesn't mention execution venues. That's partly why Coinbase is raising the issue now.

Why did the FCA want the rule in the first place?

To stop UK customers' orders being quietly filled on unregulated offshore exchanges. If a UK app could pass your order to any overseas venue, the protections around market abuse, transparency and fair prices would stop at the border. The FCA's own framing of DeFi is that genuinely decentralised activity sits outside its perimeter.

Harries herself acknowledges the rule's purpose is to stop overseas firms accessing the UK market illegally. And the FCA hasn't ignored global liquidity. According to Simmons & Simmons, a foreign trading platform can serve UK users through an authorised UK branch, provided its home regulator offers comparable protection, which lets UK customers tap a global order book.

	Supporters of the venue rule	Coinbase's argument
Main goal	Keep UK orders on supervised venues	Let regulated apps offer DeFi with warnings
View of DeFi	Truly decentralised activity is outside the perimeter	Exclusion pushes users to unregulated routes
Consumer protection	Venue-level rules on abuse and transparency	Access-point rules: disclosure, consent, protocol checks

What could it mean for UK prices and choice?

Probably fewer tokens and routes inside regulated apps from October 2027, and prices drawn from a smaller pool of venues. Best execution still applies: the FCA expects firms to check at least three reliable UK-authorised price sources where available, and Simmons & Simmons says non-UK venues may be used where outcomes are at least as good.

Here's where I'd be cautious about the doom. Firms have been able to apply for authorisation since 30 September 2026, and the branch route gives large global platforms a path to bring their liquidity with them. For buying bitcoin or ether through a UK app, the practical difference may be small.

DeFi is where you'd notice it. If regulated apps can't integrate decentralised exchanges, UK users who want them will keep using self-custody wallets directly, with no FCA protection at all. That's not a ban, exactly. Anyone can still connect a wallet to a protocol. But it does mean the safest-looking route stays closed. Honestly, Coinbase has a commercial interest here, and it's also making a fair point.

What can UK users do now?

Nothing changes before 25 October 2027, so there's no need to move funds in a panic. Check whether your exchange has applied for FCA authorisation, and if you use DeFi, understand that you're outside regulatory protection today and likely will be after 2027 too. You can also respond to GC26/7 by 18 November.

The application window for crypto firms runs until 28 February 2027, so expect announcements over the winter about who's applied and what services they'll keep.

Frequently asked questions

What did Coinbase say about the FCA's crypto rules? In a Cointelegraph opinion piece on 22 October 2026, Coinbase's Katie Harries argued that requiring UK orders to execute on FCA-authorised venues could create a de facto ban on regulated platforms offering DeFi access, and asked the FCA to regulate access points instead.

Is the FCA banning DeFi in the UK? No. The FCA hasn't banned DeFi, and genuinely decentralised activity falls outside its rules. The concern is that regulated platforms may be unable to route customer trades to DeFi protocols, because those protocols can't become authorised venues.

When do the FCA's new crypto rules start? The new regime applies from 25 October 2027. Firms can apply for authorisation until 28 February 2027. The FCA's DeFi guidance consultation, GC26/7, closes on 18 November 2026, with final guidance planned for January 2027.

Will I still be able to buy bitcoin on UK apps after 2027? Yes, assuming your platform is authorised. Orders will need to execute on UK-authorised venues, which include authorised UK branches of some overseas exchanges. Check your provider's authorisation plans before October 2027.

Can I respond to the FCA's DeFi consultation? Yes. GC26/7 is open to anyone, including consumers, until 18 November 2026. The FCA accepts responses through an online form or by email.

The practical takeaway

The venue rule is final; the DeFi guidance isn't. Watch what your platform says over the winter. For background, see our guides to the FCA's crypto policy statements, the authorisation gateway and what a DEX is. This isn't financial advice.