The GLA, MPS and TfL each hold data-sharing agreements with large numbers of different organisations for a range of different purposes, which involve both personal data and normal non-personal information. These sharing agreements could form part of contracts, funding agreements or existing legal obligations, in addition to standalone data-sharing agreements for specific purposes.
Agreements involving the processing of personal data might involve the GLA, MPS or TfL processing personal data on-behalf of other parties, or where personal data is processed by third-parties.
The GLA, MPS or TfL are not required to hold a definitive list of all the different types of data sharing or data processing agreements that might be covered by this question. The list accompanying this response contains example of sharing agreements involving the sharing and processing of personal data.