In what country is the county of Berkshire and the Thames Valley located?
Slough Slough ( ) is a large town in Berkshire, England, on the western fringes of the Greater London Urban Area, 20 mi west of central London, 3 mi north of Windsor, 6 mi east of Maidenhead, 12 mi south-east of High Wycombe and 20 mi north-east of Reading. Sitting at the gateway between the Thames Valley and London and at the intersection of the M4, M40 and M25 motorways, it offers easy road access to the rest of the UK.
Berkshire Berkshire ( or , abbreviated Berks, in the 17th century sometimes spelled Barkeshire as it is pronounced) is a county in south east England, west of London and is one of the home counties. It was recognised by the Queen as the Royal County of Berkshire in 1957 because of the presence of Windsor Castle, and letters patent were issued in 1974. Berkshire is a county of historic origin and is a home county, a ceremonial county and a non-metropolitan county without a county council. Berkshire County Council was the main county governance from 1889 to 1998 except for the separately administered County Borough of Reading.