What are the longest rivers in the UK?

Answer by  Clement (1453)

The longest UK river is the river Severn, flowing through Wales and England. The length of Severn constitutes 354 kilometres. The second-longest river is the Thames best-known for flowing through London. However, it also flows through such important English cities as Oxford, Reading and Windsor. The length of the Thames is 346 kilometres.

Answer by  ravensoffspring (412)

The Severn is the longest river in the UK. It starts in Wales and runs all the way through England. It measures at 220 miles.