Find London on the map and you will see that the river Thames runs through London.
That would be the River Thames.
The river Thames increases in width the further downstream you go. See related link...
The river Thames flows through Central London and tourists visiting that area will always see the river and stay awhile.
The River Thames is the major river through London, cutting right through the middle of the city. There are many other rivers in London, such as the River Lee (or Lea) and the River Brent.
The river Thames (pronounced temz)
London is situated on the River Thames (pronounced 'temz'.
Thames River
The Thames flows through London.
The River Thames has multiple confluences. One such is the confluence of the River Thames and the River Darent at Dartford.
Thames
The river Thames.