It takes place on the Thames.
River Severn River Thames River Trent
The River Severn, River Trent and River Thames.
As you do not qualify your question the 5 longest are - 1 River Severn 220 miles long 2 River Thames 215 3 River Trent 185 4 River Great Ouse 143 5 River Wye 135
Severn, Thames, Trent.
severn thames trent
Severn, Thames, Trent.
There are a lot more than three rivers in the UK !... The Avon The Clyde The Dee The Derwent The Ouse The Severn The Tees The Thames The Trent The Tyne ...are just ten examples (there are more !)
The River Severn - but only by about 3 miles.
Thames, Severn, Trent, Mersey, Avon, Tyne.
Severn, Thames and Trent.
The rivers Severn, Thames, Trent and Great Ouse.
Severn, Thames, Trent, Mersey, Tyne, Avon etc.