ASPSPs
- ABC INTERNATIONAL BANK PLC
- ADYEN N.V. LONDON BRANCH
- AIB Group (UK) plc
- Alpha FX
- American Express
- Advanced Payment Solutions (Cashplus Bank)
- Arbuthnot Latham & Co., Limited
- Bank of Ireland (UK) Plc
- Barclays Bank UK Plc
- BFC Bank Limited
- Brown Shipley and Co Limited
- C. Hoare & CO.
- Capital One (Europe) PLC
- Cater Allen
- Chase Bank (J.P. Morgan Europe Limited)
- Clydesdale Bank Plc (Virgin Money merged APIs)
- Clydesdale Bank Plc (Virgin Money stand-alone APIs)
- Coutts
- Coventry Building Society
- Creation Financial Services Limited
- Cumberland Building Society
- Cynergy Bank plc
- first direct
- Habib Bank Zurich Plc
- Hargreaves Lansdown Saving Limited
- HSBC Business
- HSBC Corporate (HSBCnet)
- HSBC Kinetic
- HSBC Innovation Banking
- HSBC - Private Banking
- HSBC Personal
- HSBC Channel Islands and Isle of Man (HSBC CIIOM)
- ICICI Bank UK PLC
- Industrial and Commercial Bank of China Limited London Branch
- Investec Bank PLC
- Jordan International Bank
- Lloyds Banking Group PLC
- Madison CF UK Limited (118118)
- Marks & Spencer Financial Services Plc
- Metro Bank PLC
- Mettle
- Mizuho Bank Ltd
- Monzo Bank Limited
- Nationwide Building Society
- NewDay
- Northern Bank Limited t/a Danske Bank
- Revolut Ltd
- Royal Bank of Scotland International & NatWest International
- Natwest Group PLC (NatWest, RBS, Ulster Bank)
- Sainsburys Bank PLC.
- Santander UK PLC
- SG Kleinwort Hambros Bank Limited
- Starling Bank Limited
- Tesco Bank
- The Access Bank
- The Bank of London
- The Co-operative
- The Royal Bank of Scotland Plc
- Tide Platform Ltd
- Wise Payments LTD
- Triodos Bank UK Limited
- TSB Bank PLC
- TTT MONEYCORP LIMITED
- Turkish Bank UK
- UBIDAC
- UBS AG
- Union Bank of India (UK) Ltd
- United National Bank Limited
- Unity Trust Bank
- Vanquis Bank
- Wells Fargo Bank, National Association
- World First UK Ltd
- Yorkshire Building Society
- HSBC MiVision