Thanks for the replies everyone.
1. For lights I've got - err - Knog Frogs.
Well, that's what I use on the bling bike. I've got some Smart 2/10W halogens too, which would be OK, but looking at the bracket it might be tricky mounting on my roadies drops. Looks like I'm praying for moonlight and sticking to Bollo!
3. I've booked a £1.50 single to Waterloo courtesy of Megatrain - Barg! Good tip checking National Rail, which led me there. Gets me in about half ten so I'll have a bit of time to cool my heels, but that's not a problem.
So
count me in on this one.
On the peletons route home; the A259 is a perfectly fine road, but I could take you through some back roads if you prefer?