River Thames Thames Estuary), the river is subject to tidal activity from the North Sea. Before the lock was installed, the river was tidal as far as Staines, about upstream. London, capital of Roman Britain, was established on two hills, now known as Cornhill and Ludgate Hill. These provided a firm base for a trading centre at the lowest possible point on the Thames. A river crossing was built at the site of London Bridge. London Bridge is now used as the basis for published tide tables giving the times of high tide. High tide reaches Putney about 30 minutes later than
Walton Bridge Walton Bridge Walton Bridge is a road bridge across the River Thames in England, carrying the A244 between Walton-on-Thames and Shepperton, crossing the Thames on the reach between Sunbury Lock and Shepperton Lock. The bridge is the first Thames road bridge which is on both banks upstream of Greater London. The bridge is the sixth on the site. Before the first bridge, the site had a ferry dating at least to the 17th century. Near Walton Bridge, and removed when the first bridge was built in 1750, were several barrows. Spear heads and earthenware vessels are said by J. Douglas