The second longest river in the UK. It rises in the Cotswolds and flows through Oxford, Reading, Slough, Windsor and London to the sea at Southend. Its crossing points are of great strategic importance in MC. There are no rules preventing boats on the Thames being used in the game but players trying it almost always find themselves in deep water. The IMCS
Passenger Carrying River Vessels Working Party was set up in 1994 to consider ways to change this but no-one has heard from it since.