Glenmore House, 6 The Crescent, Surbiton, KT6 4BN
Glenmore House has its own car park. One end of The Crescent is one-way, so you'll be coming in from the top of The Crescent and the car park is just passed the building on your right.
There's an entrance to the Elizabethan Suite (where the party will be) directly from the car park - there's no need to walk around to the front of the building!