Updated September 28, 2026
What is Prudential Regulation Authority?
In short
The UK regulator whose reference number tells you a firm is authorised and supervised.
The Prudential Regulation Authority is the UK body that authorises and supervises insurers and holds those firms to standards on capital and risk. Its reference number identifies the legal entity behind a provider, so you can match it against the name in your account terms. Close Brothers Savings is listed as 124750, Cynergy Bank as 575105, and Marcus by Goldman Sachs UK as 124659. Because one group can hold several licences, check the entity rather than the brand.
Sources
- cynergybank.co.uk, checked September 26, 2026
- closesavings.co.uk, checked September 26, 2026
- marcus.co.uk, checked September 26, 2026