Complex sentence: Between 1953 and 1973 an auto racing circuit operated there, supported by the Greater London Council, but the noise was unpopular with nearby residents and racing hours were soon regulated under a high court judgment.
Split into simpler sentences: Between 1953 and 1973 an auto racing circuit operated on the site, some supported by the Greater London Council. The noise was unpopular with nearby residents and racing hours were soon regulated under a high court judgment.