try this, but they're all much of a muchness
http://www.redspottedhanky.com/
or NWSS are running a coach from Cowfold/Horsham if you're that way, can't remember price but it was pretty good I think. Here's their website if you want to enquire
http://www.northwestsussexseagulls.co.uk/contacts.htm
Yes I'll be going and making a weekend of it
If anyone is looking for travel from north of Brighton NWSS Seagulls are running a coach and I guess it will pick up in Horsham, Cowfold and Pease Pottage ... Andy runs it and can be reached here http://info@northwestsussexseagulls.co.uk