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 M4 Western Motorway The M4 Western Motorway (also known as the M4 Motorway or simply M4) is a dual carriageway motorway in western Sydney, New South Wales, Australia. The partially-tolled motorway stretches from in the east, where it connects with the Great Western Highway/Parramatta Road as the A4 to in west, where it continues as the Great Western Highway as the A32. The M4 Western Motorway was formerly known as F4 Western Freeway. It used to be part of the Sydney Metroad 4 until 2013, when the new M4 route designation was proclaimed along the whole motorway. A toll was