UK API Strategy Guide (2026)

ClickMasters NHS FHIR R4 API integration costs: (1) PDS (Personal Demographics Service — patient NHS number lookup): £6,000–£12,000 (3–5 weeks including NHS sandbox testing and onboarding). (2) GP Connect (structured patient record): £15,000–£28,000 (6–10 weeks including GPSoC clinical assurance). (3) EPS (Electronic Prescription Service R3): £20,000–£40,000 (8–14 weeks). (4) NHS e-Referral Service (eRS FHIR R4): £14,000–£25,000 (6–10 weeks). All prices include NHS Digital onboarding, DTAC evidence generation, and IEC 62304 API documentation. NHS API onboarding adds 2–4 weeks regardless of development complexity — ClickMasters has established relationships with NHS Digital onboarding team.

AISP (Account Information Service Provider): access customer bank account information (balance, transactions, standing orders, direct debits) with customer consent. Use cases: affordability assessment for lending, personal finance management, account aggregation. PISP (Payment Initiation Service Provider): initiate a payment from customer's bank account with customer consent (account-to-account payment — no card needed). Use cases: e-commerce payment alternative to card, instant bank transfer. Regulatory difference: AISP requires FCA registration (Article 33 PSD2 exemption or full authorisation), PISP requires full FCA authorisation (higher bar — PISP can move money). UK implementation: TrueLayer (AISP + PISP), GoCardless (PISP — Variable Recurring Payments). ClickMasters has implemented both AISP and PISP for UK FinTech clients.