The window is closing on the biggest loosening of Britain’s bank ring-fence since the wall went up. Responses to the Treasury’s consultation, “Safeguarding Stability, Enabling Growth: Consultation on Ring-fencing Reform”, are due by 11:59pm on 8 September, a fortnight from now. Published on 14 July alongside a parallel paper from the Prudential Regulation Authority, it puts the detail on a promise the government made in May: to let the retail banks that sit inside the fence do a slice of the very business the fence was drawn to keep out.
The mechanism at the centre of the plan is a new Growth Allowance. It would let a ring-fenced bank carry otherwise-prohibited activity up to a ceiling of 10 per cent of its Pillar 1 risk-weighted assets for credit risk. That is a deliberate breach in a boundary that has, since 2019, been close to absolute: retail deposits on one side, wholesale and investment risk on the other. The allowance does not move the wall so much as cut a controlled gate in it, and the consultation is the argument over how wide that gate should open.
Some of the new freedom is being squared with the capital rules landing next year. The consultation proposes widening the list of permitted derivative products a ring-fenced bank may use, aligning them with the Basel 3.1 standards that take effect on 1 January 2027. That is the only point at which the two big banking reforms of this cycle touch: the Basel package sets how much capital a bank must hold, while the ring-fencing review governs what a ring-fenced bank is allowed to do with it. The overlap here is narrow and technical, a matter of keeping the permitted-products list consistent with the prudential rulebook rather than a joint loosening of both at once.
Beyond derivatives, the reform reaches for the counterparties a ring-fenced bank has been barred from touching. The Treasury proposes to permit exposures to a defined set of vehicles that channel money into the real economy: UCITS funds, structured finance vehicles focused on small and medium-sized businesses, special purpose vehicles for infrastructure, and vehicles backed by public financial institutions. Each is a route by which deposit funding could reach borrowers the fence currently keeps at arm’s length. The government’s case is that these are productive uses of a large and stable deposit base; the case against is that every one of them adds a strand of connection between the protected retail bank and the wider financial system the ring-fence was meant to insulate it from.
On the government’s own arithmetic, the prize is large. Ministers have put the figure at up to £80bn of additional financing for British business and infrastructure, the number that has animated the whole review and that the growth allowance is built to deliver. That estimate belongs to the political framing rather than the consultation’s fine print, and the banks will have their own, more cautious, views on how much of it is real. But it explains why the exercise is happening now, in a Parliament that has made growth its organising theme.
There is a quieter provision that may matter as much to the banks’ finance directors. The consultation proposes to let a surplus sitting in a ring-fenced bank’s defined benefit pension scheme be shared with other schemes in the same banking group, subject to conditions. For groups carrying trapped surpluses on the retail side of the wall, that is a real easing: it lets capital that has been stranded by the structure of the fence move to where the group can use it. It is also, in miniature, the whole philosophy of the reform, treating the rigid separation of 2019 as a cost to be trimmed rather than a safeguard to be preserved.
The two halves of the package run on their own clocks. The Treasury’s consultation closes on 8 September; the PRA’s paper, CP10/26, which carries the more technical work on permitted products, exposures and the operation of the regime, runs until 14 October. A draft statutory instrument is expected to follow, with the primary legislation carried in the Financial Services and Markets Bill for the 2026 to 2027 session. None of it changes a bank’s obligations the morning after the consultation shuts. What closes on 8 September is the chance to shape rules whose direction is already fixed.
That direction is the point of contention. The ring-fence was the signature institutional answer to 2008, the product of Sir John Vickers’s Independent Commission on Banking and the Financial Services (Banking Reform) Act 2013, and it exists so that when a trading book fails the cash machines keep working and the taxpayer is spared the choice between a bailout and a bank run. Loosening it in calm conditions is, its architects warn, exactly how the discipline of a crisis is forgotten. The Treasury’s reply is that supervision and resolution have advanced since 2013, that the wall has become an expensive drag on lending, and that a carefully bounded gate is not the same as tearing the structure down.
Both propositions are now on the table in black and white, and the people who will live with the answer, the finance and treasury teams inside the ring-fenced banks, have until 8 September to say which they believe. After that the drafting begins, and the shape of a materially more permeable fence moves from consultation to law.
Sources: HM Treasury, “Safeguarding Stability, Enabling Growth: Consultation on Ring-fencing Reform” (published 14 July 2026, closes 8 September 2026), gov.uk; HM Treasury, “Safeguarding Stability, Enabling Growth: The Ring-Fencing Review” (findings, 18 May 2026); PRA consultation paper CP10/26 (closes 14 October 2026); Financial Services (Banking Reform) Act 2013; Independent Commission on Banking (Vickers) final report, 2011.
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