The talk schedule for UK python is posted and I'm on it. Conferences are a good time by themselves but I'd be lying if I said I don't enjoy talking in addition to attending.
The schedule is a bit funky with four rooms instead of the standard three. It is an interesting experiment so I hope one of the organizers will write up the reasons for, and the results of afterwords. UK Python is expected to be small at ~200 people (the size of PyCon 10 years ago). Small ventures are expected to experiment because the cost of failure is low and the rewards of success are high. I don't have a horse in this race so I'm happy to watch and see.