The drive to Stoneleigh is terrible for traffic through Ashtead and Epsom so if wanting to part drive he would be better going my route and park at Tolworth change train at Wimbledon
Easy drive Ferring to Leatherhead on A24 then Oxshott and A3 come off at Raynes Park just after Tolworth straight to St Georges coming in from the old Dons ground and dog track. Leave Ferring at 9.00 am over Long Furlong. Sorry cant help with parking