Gas Operations

Tel: +44 (0)8456 442724
Fax: +44 (0)8456 442723


Power Operations

Tel: +44 (0)8456 442870
Fax: +44 (0)8456 442930


Market Operations

Tel: +44 (0)845 164 5079

Software Support

Tel: +44 (0)1223 446197
Fax: +44 (0)1223 446193



Tel: +44 (0)121 236 4044
Fax: +44 (0)121 236 4137


General Enquiries

Tel: +44 (0)1223 446160
Fax: +44 (0)1223 446161


By Road

From M11, exit at Junction 11 and follow signs to Cambridge. This will bring you into Cambridge on Trumpington Road. Once in Cambridge follow signs to the railway station which will direct you to turn into Brooklands Avenue. Turn right into Clarendon Road. Clarendon House is then 80 metres down on the left hand side.

By Rail

Turn left out of the main station exit. Walk for approx 150 metres and take the first road turning to the right. After 30 metres you will see a Costa Coffee on your right and a main road in front of you. Cross that main road (there is a pedestrian crossing outside the Costa). Go straight on, down Brooklands Avenue. After 80 metres take the first left road turning into Clarendon Road. GMSL is in Clarendon House, which is on the left hand side, about 80 metres down Clarendon Road.