https://www.theregister.co.uk/2019/11/20/metropolitan_police_600m_it_contract/

London's Metropolitan Police Service (MPS) has published its first procurement notice to consolidate its IT "towers" in a contract worth £600m over five years.

Currently the body's IT contracts are structured via a multi-supplier "Towers Model". This had previously been viewed as a way of breaking up huge IT contracts with single suppliers into more manageable "chunks". However, the model has rarely worked in practice, with some public sector bodies seemingly reverting back to the "one throat to choke" approach instead.