The Metropolitan Borough of Wirral is a metropolitan borough of Merseyside, in North West England. It has a population of 322,453 (2022), and encompasses 62 square miles (161 km2) of the northern part of the Wirral Peninsula. Major settlements include Birkenhead, Wallasey, Bebington, Heswall, Hoylake and West Kirby. Wirral is England's westernmost metropolitan borough, faced by the city of Liverpool to the northeast over the River Mersey.

Merseyside is a ceremonial and metropolitan county in North West England. It borders Lancashire to the north, Greater Manchester to the east, Cheshire to the south, the Welsh county of Flintshire across the Dee Estuary to the southwest, and the Irish Sea to the west. The largest settlement is the city of Liverpool.