and where does it end?
It flows into the North Sea
River Thames
flows into the North Sea via the Thames Estuary
why do they have high security at the tower of london today UNANSWERABLE where is the tower of london located? Central London is it also referred to as the white tower? Yes why? It was the strongest structure in a medieval castle are there any rivers located in this place? Yes, River Thames which fish can you find in it? Salmon where does the river begin from? Gloucestershire
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River Thames [SEP] Introduction
The River Thames ( ), known alternatively in parts as the River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the second-longest in the United Kingdom, after the River Severn. It flows through Oxford (where it is called the Isis), Reading, Henley-on-Thames and Windsor. The lower reaches of the river are called the Tideway, derived from its long tidal reach up to Teddington Lock. It rises at Thames Head in Gloucestershire, and flows into the North Sea via the Thames Estuary. The Thames drains the whole of Greater London.