What Is The Longest River In The British Isles?
What Is The Longest River In The British Isles? Rank River Length (km) 1River Severn 354 2 River Thames 346 3 River Trent 297 4 River Wye 250 Is the River Shannon the longest river in the British Isles? With a length of 240 mi. (386 km), the Shannon River is the longest river in