Car Parking is pretty much non existent at Dulwich Hamlet so the suggestion is go by train. East Dulwich station is five minutes walk away from Champion Hill and its a straightforward journey using Southeastern from Tonbridge to London Bridge and Southern from London Bridge to East Dulwich. Journey time is a little over an hour and there are some good fare deals if you book ahead or have a railcard.
There is likely to be a 3,000+ Bank Holiday crowd so the advice is arrive in plenty of time.
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