We want to run an Urban Tree Talk on Sunday 7 October (2.30pm-4.30pm) for 20-30 people sitting in the round. We have people coming from Sheffield - their street tree action group (of which you might have heard something of their efforts) - and as their train service is none too reliable, we would like to try to find a venue as close to St Pancras station as possible. Any suggestions for inexpensive venues would be much appreciated.