M4 corridor bridge, serving Chepstow, being renumbered the M48, although the area is still generally considered as falling within the M4 corridor. Since the start of the 21st Century there has been evidence of more investment west of Cardiff, such as: M4 corridor The M4 corridor is an area in the United Kingdom adjacent to the M4 motorway, which runs from London to South Wales. It is a major high-technology hub. Important cities and towns linked by the M4 include (from east to west) London, Slough, Bracknell, Maidenhead, Reading, Newbury, Swindon, Bath, Bristol, Newport, Cardiff, and Swansea. The area is also served
Listed buildings in Manchester-M4 the Cooperative Wholesale Society built large offices and warehouses in the area, and these are listed. The other listed buildings in the area include houses, shops, public houses, a hotel, churches, market halls, a schoolroom, a women's refuge, a former fire and police station, a corn exchange, and a bank, many of which are have been converted for other uses or are unused. Listed buildings in Manchester-M4 Manchester is a city in Northwest England. The M4 postcode area is to the northeast of the city centre, and includes part of the Northern Quarter, part of New Islington, and the area