The framework consists of five lots, one of which is grounds maintenance, worth between £4m and £8m.
The estate covers the 32 London boroughs as well as several locations on the outskirts of the city.
For details, call Paul Homshaw on 01372 863451 or email firstname.lastname@example.org.
Further information and bidding are online at www.london.gov.uk/what-we-do/mayors-office-policing-and-crime-mopac. Bid by 22 June.