Olympic road race; access to Box Hill

yep no bikes this weekend on Southern too:

Southern Cycle Policy during the Olympic Road Cycle Race
The Olympic Road Cycle Race event will take place on July 28th and 29th. From start of service on 28th July to close of service on 29th July, non fully folding bikes will not be permitted on trains between London Bridge/London Victoria and Box Hill & Westhumble on routes via Mitcham Junction, West Croydon, Sutton, Epsom and Horsham.

http://www.southernrailway.com/your-journey/games-travel/