Ooops - saw this too late. I hope you came along any way!
This is excellent for the "pretty slow" and "very slow" - check out the
new runner instructions and just turn up and run. Also look at some of the reviews on runnersworld.co.uk - there are plenty of Race4Life type run/walkers and they've all reported that it is friendly and excellent!
When you come, look out for online peeps - especially
Fetch Everyone vests - they are all very friendly!
But actually next week will be my first BPTT missed since NYD (although for some of the races this year I have been time-keeping and marshalling rather than running).
Post here or drop me a mail if you need any more info!