Common Services (CS)

Welcome to Common Services (CS)

Common Services is a live system that makes it easier to access, integrate and share data across the London Market. The three components of CS are:

  1. Single-Sign On - enabling users to access LM TOM and market solutions through a single username and password. For most users, this will be the same credentials used to access their workplace IT services. The system works without the need for any passwords to be shared with LM TOM and reduces the number of times a user has to login to different systems.
  2. API Gateway - an easy way for firms to integrate LM TOM and third party services in their own back office IT systems, helping firms to adopt new solutions quickly and efficiently.
  3. Secure Data Exchange - an optional component providing a channel to exchange securely encrypted files of any type up to 1GB between market participants. Available via an easy to use web interface or via the API Gateway.

Please see the relevant sections below for further detail on Common Services.

Support: Common Services is provided by TMEL with support from LIMOSS. For all service desk enquiries, please contact

Integration: Market firms or market vendors looking to integrate their systems with the API Gateway or Single Sign On should contact