London to Brighton Off Road travel question...

[MX-5 Lazza]

I'm going to be doing the London to Brighton Off Road with a few friends in September and wondered if there are many others on here doing the same. If so, what are your plans for getting home again afterwards? So far we are planning to drive to Brighton very early in the morning, get the train up to London then cycle back (obviously). However, if anyone is planning to take a mini-bus or something and has space for 2 more people & bikes then we would be happy to chip in to help with the costs!
We would be going from Wokingham and/or Basingstoke.