The reporting rules have a start date
From 18 March 2027, banks, building societies and other in-scope firms report a register of their material third-party arrangements each year, and notify the regulators before entering into, or significantly changing, one. Operational incidents are reported too, with the first report expected within 24 hours.
days until the rules take effect
Sources: PRA PS7/26 and FCA PS26/2, 18 March 2026