An open air, promenade performance, they used the space at Racks Close to separate the scenes, with the audience following the characters into the wood for the middle section of the play. The production is set in 1967 Guildford, and makes extensive and very effective use of 60s music throughout. We really, really enjoyed it, despite some quite intense rain during the second half (the BBC weather had said "showers dying out through the evening" - we evidently got caught in their death throes). I strongly recommend it, if you can still get tickets!
I'm not much of theatre critic, but see some reviews here
And the GSC have a trailer on YouTube: