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
Queen Elizabeth II Dock Queen Elizabeth II Dock Queen Elizabeth II Dock is a dock situated on the River Mersey at Eastham, in the Metropolitan Borough of Wirral, Merseyside, England. Construction of the dock began in 1949, adjacent to the entrance of the Manchester Ship Canal at Eastham Locks and opening directly onto the river. The dock was built to provide berthing facilities for large tankers that could not be accommodated on the existing canal due to their size. Simultaneously, Eastham Oil Terminal was built nearby and pipelines were laid to link the dock and storage facility to the Stanlow Oil Refinery near Ellesmere