Five children are known to have drowned in the recent hot weather.
Police were called on several separate occasions, including to the River Ribble in Lancashire, where the body of a 12-year-old boy was recovered last night.
Experts are warning of the dangers of swimming in areas with no lifeguard, like reservoirs and rivers.
A number of youths were spotted trying to launch themselves from Hampton Court Bridge over the bank holiday weekend.
Surrey Fire and Rescue Crew Commander Rich has given this advice.
