A Thames Conservancy flag. A launch flag for use when patrolling rivers in the 1860s and 70s.
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.