While the United Kingdom has a very well-developed banking system with finance and related businesses making up a major part of the economy, there are relatively few banks in the UK. This is because the banking system in Britian has been highly-consolidated since the early 1900s.
Many other large economies and nations have a wide range of smaller, independent regional banks, but the UK has few.
In 2008 during the early stages of the financial crisis, Northern Rock was nationalized, as was Bradford & Bingley. Santander who owns Abbey acquired Alliance & Leicester, and Lloyds TSB PLC took over HBOS PLC.
Abbey National
Alliance & Leicester
Bank of Ireland - United Kingdom
Barclays Bank
Birmingham Midshires Financial Services Limited
Bradford & Bingley Building Society
Capital Bank
Cheltenham & Gloucester
Citibank UK
Clay Cross Building Society
Co-operative Bank
European Bank of Reconstruction and Development
First Direct
Flemings
Grindlays
Halifax
Hamilton Direct Bank
HSBC United Kingdom
Lloyds TSB
Lombard
Market Harborough Building Society
Midland Bank Plc (HSBC)
Nationwide Building Society
NatWest (National Westminster Bank)
Northern Rock
Sabanci Bank
Scotia Bank International - Bank of Nova Scotia United Kingdom
Secure Trust Bank BankNet (Online Bank)
SG Hambros Bank & Trust (Société Générale Group)
Staffordshire Building Society
Standard Bank London
Standard Chartered Bank
Sun Bank
Teachers' Building Society
The Loughborough Building Society
Woolwich