M4 corridor 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 by the Great Western Main Line, including the South Wales Main Line, and London Heathrow Airport. Technology companies with major operations located in the area include Amazon, Citrix Systems, Dell, Alcatel-Lucent, Huawei, Lexmark, LG, Microsoft, Novell, Nvidia, O2, Panasonic,
M4 Western Motorway The first main road west from Sydney was the Great Western Highway, shown above in orange. The County of Cumberland planning scheme provided for a modified route west, much of which was later built as the M4 motorway. At present, the NSW Government proposes to complete the motorway by means of an M4 East tunnel as far east as Wattle Street, with provision for a future tunnel extension to the Anzac Bridge at Victoria Road and the 'new M5' at St Peters. M4 Western Motorway The M4 Western Motorway (also known as the M4 Motorway or simply M4) is a