Hi mate, its very close, its on the opposite side of the road to the round building on google maps.
You really cant miss it. Big glass building with massive BT sign on the front lol it backs out onto the river.
If you head behind the building towards the river then turn left (instead of right behind the BT building,) there is a free carpark right there.
Best of luck!
Edited by MMCMME (Wed 17-Jan-18 15:38:44)