Certified FAPI1 OP - UK Open Banking
Organization Implementation UK-OB Adv. OP w/ MTLS UK-OB Adv. OP w/ Private Key
AIB Group (UK) plc Open Banking Specification v3.1.11 (Nov 2025)
AIB Group (UK) plc. Open Banking Specification v3.1.11
Authlete Authlete 2.2
Barclays Execution Services Limited Certification for Barclays fapi1-advanced-final-test-plan Oct 2024
Barclays Execution Services Ltd Barclays fapi1-advanced-final-test-plan Nov 2025
Cater Allen CA Open Banking v. 2.0.0 (Mar 2025)
Cloudentity Cloudentity
Cloudentity, Inc. Cloudentity as of August, 2022
Coutts & Co. Open Banking API 3.1.11 (Nov 2024)
Coutts & Co. Open Banking API 4.0
HSBC UK Bank plc first direct Read / Write API Version 4.0
HSBC UK Bank plc HSBC Business Read / Write API Version 4.0
HSBC UK Bank plc HSBC Kinetic Read / Write API Version 4.0
HSBC UK Bank plc HSBC Personal Read / Write API Version 4.0
IBM IBM Security Verify (as of May 2022)
IBM IBM Security Verify Access 10.0
Lloyds Banking Group R134 20241121
Lloyds Banking Group R148 20251125
Marks & Spencer Financial Services Limited M&S Bank Read / Write API Version 4.0
Nationwide Building Society Open Banking Read-Write APIversion 3.1.11 (Jan 2025)
NatWest (Trading as Mettle) Mettle v3.1.10 FAPI Sept 2024
Natwest (Trading as Mettle) Mettle v4.0.0 FAPI Nov 2025
Northern Bank Ltd (trading as Danske Bank) Open Banking v3.1.11 (Apr 2024)
Northern Bank Ltd (trading as Danske Bank) Open Banking v4.0
Open Intelligent Technology Limited OpenIT – FAPIAdv IdP_v1
Ostia Software Solutions LTD N-CAPIE: NO-CODE API ECOSYSTEM V1.1.1
Ping Identity Corporation PingFederate 10.3
Santander plc OpenBanking UK 3.1.11