The venue recommends using public transport unless completely unavoidable. You can get the underground to Southfields or Wimbledon, both of which are District line and less than 20 minutes' walk from the courts. Wimbledon also has an above-ground station which is fed from Waterloo and many other stations en route, if you find the underground a little perplexing! Otherwise, taxis are a good option, as car parking space is very scarce.