BT Group
BT Group plc (British Telecommunications) is the United Kingdom's largest fixed-line, broadband, and mobile communications provider, headquartered in London with operations spanning consumer, business, wholesale, and global enterprise markets. The group is organised around three customer-facing brands — BT, EE, and Plusnet — and a wholesale division that sells capacity and access to other communications providers. BT Group operates the UK's largest mobile network (EE), runs fibre and copper access through Openreach (a legally separate group company), and provides networked IT and security services to multinational enterprises and the UK public sector. The group publishes a public developer programme at developer.bt.com that exposes a growing catalogue of REST APIs across two main domains: charging and crediting (Direct Carrier Billing, Crediting, Premium SMS) and digital identity / fraud prevention (SIM Swap, Network Identity, Call Divert Protection), alongside wholesale and operational APIs (Broadband One, Quote Management, Address Management, Appointment Management, Product and Network Availability, HubCo Voice, Global Voice Services, IMEI Lookup, Home Network, Rail Insights, Location Insights for London, and a Travel Journey API Platform). The portal supports sandbox onboarding with Client ID / Client Secret OAuth 2.0 credentials and progression to production under a commercial agreement with an account team. In April 2025 BT announced a federated API management partnership with Kong (Kong Konnect) to consolidate its previously fragmented API estate, strengthen governance, and offer a self-service developer experience across the group.
BT Group publishes 15 APIs on the APIs.io network. Tagged areas include Telecommunications, Telco, Mobile Network, Broadband, and Fibre.
BT Group’s developer surface includes documentation, signup flow, GitHub presence, YouTube channel, and 23 more developer resources.
APIs
Direct Carrier Billing API
Charge one-off or recurring purchases directly to a verified end user's BT or EE mobile bill or pre-pay credit, enabling carrier-billed payments without re-collecting card or ba...
SIM Swap Detection API
Query when a mobile subscriber's SIM was last changed so relying parties can detect SIM-swap account-takeover attacks before sending SMS one-time passcodes or completing high-ri...
Network Identity API
Determine whether a given mobile number is on the EE or BT Mobile network, or on one of EE's MVNO partners, returning an anonymised mobile subscription reference (AMSR) to minim...
Broadband One Order API
Place broadband orders from communications-provider systems directly into BT Wholesale's "The Hub" order platform for Broadband One products.
Quote Management (Ethernet)
Create and retrieve quotes for BT Wholesale Ethernet and Optical connectivity products as part of B2B ordering flows.
Address Management API
Search the Rest of BT (RoBT) and Openreach address databases to retrieve address records and address keys for ordering, and create addresses when no matching record exists.
Appointment Management API
Book, amend, and cancel engineer appointment slots for wholesale broadband and voice provisioning workflows.
Product and Network Availability API
Check product and network availability at a given address or premises for wholesale broadband and voice services prior to ordering.
BT Wholesale HubCo WHCE API
Wholesale Hosted Centrex / Voice (WHCE) API for managing hosted voice services delivered via BT Wholesale's HubCo platform.
Global Voice Services API
Initiate ordering of phone numbers and configuration for BT Global Voice Services consumed by multinational enterprise customers.
IMEI Lookup API
Retrieve the IMEI associated with a given MSISDN for device identification, fraud, and entitlement checks.
Home Network API
Verify whether a customer's phone is currently connected to EE's mobile network, supporting risk decisioning and step-up authentication.
Rail Insights API
Provide strategic insights into current and future demand on the UK's railway network derived from BT's mobile network and analytics capabilities.
Location Insights for London API
Access insights on footfall activity and visitor catchments across any location in London, derived from anonymised mobile network signals.
Travel Journey API Platform
Platform of APIs supplying travel and journey intelligence derived from BT's network and Active Intelligence capabilities.