A Thames Conservancy flag. A launch flag for use when patrolling rivers in the 1860s and 70s.
Thames Conservancy Notice issued January, 1949. Warning users of vessels on the River Thames not to dispose of refuse or rubbish into the river.
An orange nylon/wool Thames Conservancy Guard Boat flag.
A red Thames Water Authority flag, 1976-1985.
A red Thames Conservancy flag.
A green Thames Conservancy Wreck flag.
A red Thames Water flag.
Conservators of the River Thames flag White and red canvas flag bearing the insignia of the Conservators of the River Thames.