Securicor Office Services Limited | 29th November 1982 to 11th July 1995 |
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Securicor Omega Office Services Limited | 11th July 1995 to 23rd January 1998 |
HAYS Office Services Limited | 23rd January 1998 to 4th October 2005 |
Weyside Office Services Limited | 4th October 2005 to 26th July 2019 |