It is also often referred to as the Royal County of Berkshire because of the presence of the royal residence of Windsor Castle. Berkshire borders the counties of Oxfordshire, Buckinghamshire, Surrey, Wiltshire and Hampshire, and is usually regarded as one of the home counties. The highest tier of local government in Berkshire are now the unitary authorities of Bracknell Forest, Reading, Slough, West Berkshire, Windsor and Maidenhead and Wokingham.
