One agreed picture of how UK financial services splits into sub-sectors, so every bid describes the market the same way.

What it holds

• Banking, insurance, wealth and asset management, payments and market infrastructure, each with a written boundary.
• Firm-type definitions inside each sub-sector, from universal banks to digital challengers and building societies.
• The economics of each sub-sector. Where revenue comes from, what compresses margin and what forces change.

Sources. Bank of England statistics · FCA sector views · UK Finance market reporting

• Shared concept glossaryThe terms every bid uses, written down so answers stay consistent across writers.
• Value-chain referenceWhere money, risk and data move in each sub-sector, with the pressure points named.