Other than the festival camp site, which has to be paid for, there are no camp sites near Thames. You can try to stay in laybys etc., for the odd night. If you want shower facilities use Thames sports center. Shower costs a pound. There is a small capacity for tents at the three horseshoes in Towered for those attending the singaround. There are no out of hours toilet facilities though. Reserve a tent space on the fb site above. It is a 20minute walk to the fest site. Please come and sing in the barn.