Gatwick is about 20 miles south from Central London. There are trains from there to London Victoria or London Clapham Junction in 30 minutes here you can change to trains to all tour start destinations.
Map of all train connections:
Ale Tasting Bike Tour
Starts Putney (Zone 3)
From Clapham Junction you can take the Reading or Windsor train to Putney (5-10 mins)
Royal Deer Park Ride + Hampton Court Palace Bike Tour
Start Richmond (Zone 4)-Mainline + Underground District Line
From Clapham Junction you can get to Richmond by taking the Reading or Windsor train(10-15 mins)
Windsor Castle Bike Tour
Start Shepperton (outside London zone)
Start Hampton Court (Zone 5)
Victoria (55 mins)/Clapham Junction(35-50 mins)-Shepperton
Victoria (50 mins)/Clapham Junction(30 mins)-Hampton Court
OR why not arrive the night before and stay in one of our suggested accommodation choices.