* River Thames: The River Thames is the longest river in England. It flows for 215 miles from the Cotswold Hills in Gloucestershire to the North Sea at the Thames Estuary. The Thames is a major shipping route and is lined with many historical landmarks, including the Tower of London and the Houses of Parliament.
* River Severn: The River Severn is the longest river in Wales. It flows for 220 miles from the Cambrian Mountains in Powys to the Bristol Channel at the Severn Estuary. The Severn is a major shipping route and is used to generate hydroelectric power.
* River Trent: The River Trent is the third longest river in England. It flows for 185 miles from the Staffordshire Moorlands in Staffordshire to the Humber Estuary at the North Sea. The Trent is a major shipping route and is used to generate hydroelectric power.
* River Mersey: The River Mersey is a major river in North West England. It flows for 70 miles from the Peak District in Derbyshire to the Irish Sea at the Liverpool Bay. The Mersey is a major shipping route and is lined with many historical landmarks, including the Pier Head and the Liverpool Cathedral.
* River Clyde: The River Clyde is a major river in Scotland. It flows for 106 miles from the Southern Uplands in South Lanarkshire to the Firth of Clyde at the North Atlantic Ocean. The Clyde is a major shipping route and is lined with many historical landmarks, including the Glasgow Cathedral and the Riverside Museum.