Ableoffer Limited | 23rd December 1985 to 26th August 1986 |
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City House Services Limited | 26th August 1986 to 7th December 1988 |
Contract 2000 (London) Limited | 7th December 1988 to 26th May 1992 |
Securicor Facilities Management Limited | 26th May 1992 to 16th April 1996 |
Securicor Cit Limited | 16th April 1996 to 11th July 2005 |
G4S Cit (UK) Limited | 11th July 2005 to 30th March 2021 |