Modifications: full roll cage snorkle SOA lift winch bullbar winch(ramsey pro 8000) hilift jack mount waffle boards mounts jerry cans mount cb radio front and rear recovery darken leanses 8x spot light rear work light bucket seat 5 point harness
As Jim says, Grays is only a 10min detour each way from J30/31 on the M25. Best bet would be to pick them up on your way back.
If all else fails give me a call . I doubt I will make the picnic as I can't commit to this one yet, but I may be able to collect and hold them at mine till they can be passed on at a later date or meet.
Traffic lights in London are just rough guidelines