Management GBM

I want to join the GBM so I am searching for list of departments of the GBM. Also tell me about its services and the contact details of the GBM?

[Saksham]

The GBM departments are as follows:

COMMERCIAL
PUBLIC
RETAIL
LEISURE

The list of services offered by the GBM is as follows:
Cleaning
Security
Waste Management
Facilities Management
Managed Services

Address:

Head Office

George House
75-83 Borough High Street
London SE1 1NH
Telephone 020 7089 6600