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 Hospital Queen Elizabeth II Hospital The Queen Elizabeth II hospital – or the QEII as it is known locally, is located in Welwyn Garden City and managed by East and North Hertfordshire NHS Trust. The facility, which replaced the Welwyn Garden City Cottage Hospital in Church Road, was opened by the Queen in July 1963. All inpatient and emergency services were transferred to the Lister Hospital at Stevenage in October 2014. Following the construction of modern facilities built at a cost of £30 million, the Trust opened the "New QEII Hospital" in November 2015. The old hospital was demolished and that