SA4 is a part of the Roman-Jones business area in the North West of England. It covers parts of the counties of Cheshire, Greater Manchester, Merseyside and Lancashire. This area is home to major commercial and industrial centres, such as Trafford Park in Greater Manchester, Brook Islands in Merseyside and the Cheshire Oaks retail park. It also contains areas of superb natural beauty, such as the Wirral Peninsula, the Forest of Bowland and the Peak District. It is a key area for business and tourism, as well as providing good transport links to the ports of Liverpool and Manchester.