What Are Tokenised Deposits? UK Bank First

In brief: On 24 September 2026, seven of the UK's largest banks completed the world's first interbank customer transactions using tokenised sterling deposits, moving money between institutions on a shared platform. A tokenised deposit is a claim on commercial bank money recorded on programmable infrastructure, spendable at par and carrying deposit protection. The live transactions covered remortgaging and digital asset settlement, and mark the point where the UK's tokenised-deposit work crossed from experiment into production.

A tokenised deposit is a claim on commercial bank money, held at a regulated bank, that is recorded and moved on programmable ledger infrastructure while remaining spendable at par and eligible for deposit protection. On 24 September 2026, that definition stopped being theoretical. According to CoinDesk, the UK's largest banks executed the world's first customer transactions using tokenised sterling deposits that moved between separate institutions on a shared platform. The distinction that matters for institutions is the word interbank: earlier trials kept the money inside one bank, while this run proved that programmable commercial bank money can settle across firms.

The transactions were delivered through the Great British Tokenised Deposit (GBTD) initiative, convened by UK Finance. Barclays, HSBC UK, Lloyds Banking Group, Monzo, Nationwide, NatWest, and Santander took part. The platform was built by Quant, project management came from EY, and the legal framework and rulebooks were drafted by Linklaters. Two remortgage transactions were carried out by Lloyds Banking Group, NatWest, and Barclays, with funds locked during the property process and released automatically on completion, and the pilots explored connecting to HM Land Registry to speed future conveyancing.

How is a tokenised deposit different from a stablecoin?

Both instruments promise digital pounds that move on programmable rails, but they sit on different balance sheets and answer to different rulebooks. That difference determines whether a treasury team can hold the instrument as ordinary cash or must treat it as a separate exposure. The comparison below sets out the distinctions that shape how each is used in wholesale and retail settings.

The last row explains why the Bank of England has leaned toward the deposit model. Governor Andrew Bailey has repeatedly voiced caution about banks issuing their own stablecoins, warning in comments reported by CoinDesk in July 2025 that stablecoins could pull funding out of the banking system and weaken credit creation. A tokenised deposit keeps the money where it already is, which is precisely why the GBTD design appeals to a central bank protective of monetary and financial stability.

Why does the interbank milestone matter?

The leap from single-bank pilots to cross-institution settlement is the whole point. A programmable pound that only works inside one bank is a closed loop. A programmable pound that can move between Barclays, NatWest, and Lloyds while preserving the singleness of money, the principle that a pound is a pound wherever it is held, is the foundation of a national payment system.

The path here was deliberate. UK Finance ran the Regulated Liability Network experimentation phase in 2024, when eleven institutions including Barclays, Citi UK, HSBC UK, Lloyds, Mastercard, NatWest, Nationwide, Santander UK, Standard Chartered, Virgin Money, and Visa tested tokenised deposits across five use cases and concluded, per Ledger Insights, that the network was a viable innovation platform. The live GBTD pilot followed in September 2025, targeting three use cases: marketplace person-to-person payments, remortgaging, and digital asset settlement, with the programme scheduled to run until mid-2026. Monzo joined as the seventh participant in January 2026. The September 2026 transactions are the payoff from that sequence.

For issuers, the digital asset settlement use case is the one to watch. A tokenised deposit that settles atomically against a programmable security removes the settlement lag and counterparty risk that sit between trade and finality today. That is the mechanism by which delivery-versus-payment becomes instant rather than aspirational, and it is why the same infrastructure that clears a remortgage is relevant to anyone issuing or raising capital against programmable instruments.

Where do UK regulators stand?

The supervisory backdrop has moved in step with the industry. In May 2026 the FCA and the Bank of England set out a shared vision for tokenisation in UK wholesale markets, signalling that programmable settlement infrastructure has official backing rather than mere tolerance. The Digital Securities Sandbox continues to admit new participants, giving firms a supervised venue to run tokenised securities and settlement together.

The deposit route also has a legal skeleton, not just working code. Linklaters drafted the GBTD rulebooks, which matters because programmable money without an enforceable framework governing who owes what to whom is an operational novelty rather than a settlement asset. That rulebook work, combined with the ISO 20022 messaging standard underpinning the Quant-built platform, is what lets the output plug into existing payment infrastructure rather than sit alongside it.

What should an institution do now?

Treat this as a signal to prepare, not to wait. Map where your own settlement, treasury, and issuance workflows carry lag, counterparty exposure, or reconciliation cost, because those are the points a tokenised deposit is built to compress. Read the GBTD use cases as a preview of what your counterparties will soon expect, and read the FCA and Bank of England wholesale tokenisation vision as the direction of the rulebook you will operate under. The banks have proven that programmable commercial bank money can move between institutions and settle against digital assets. The open question for issuers and asset managers is whether their instruments are composable and auditable enough to meet that money when it arrives, which is exactly the readiness Issuant is built to support.