Normally, I'd fully recommend Roger's Oxford to Acton night ride occurring on the 12th October, as it's a lovely route, having done a few of the original ones over the years.
However, seeing as I'm leading it, I'd better plug the official FNRttC from London to Shoreham. Setting off at midnight by the NT café on the South Bank, 60 miles of lovely tarmac wending our way down to the stunning art deco terminal building at Shoreham Airport.
More info and the registration page can be found at
www.fnrttc.org.uk/london-to-shoreham.