Chesington and thorpe park are both in and around the surrey area which is about 5-6 miles off of london.
Thorpe Parks excellent if you want a good day out with the kids but the prices are ridiculous and more often than not the main rides require a good wait, chessington though still overpriced offers much more sensible price structures.
For what its worth i assure every one of you i attended both parks when i was a minor and am indeed not a serial sex offender
