If you'll be staying in London, we'd recommend staying a little bit away from the venue and then then getting public transport or a taxi to and from the venue. Earls Court/South Kensington, Victoria and Battersea/Clapham Junction are all close to the venue and have a range of hotels.
There is a bus stop right outside, and the closest tube stop is Sloane Square which is about 15 minutes walk. There are bus routes from Sloane Square Tube Station to the venue and also from Clapham Junction Train Station.
If you're staying a little longer and would prefer to stay closer to us, we're located near East Croydon.