The development is on a large brownfield site, part of which was once the location of the 1908 Franco-British Exhibition. The initial site clearance demolished the set of halls still remaining from the exhibition. There were also considerable precautions needed during demolition due to the expectation of finding unexploded bombs from raids on a local munitions factory during the World War II blitz. Elsewhere on the site was a London Underground railway depot, which had to be kept fully operational while a new depot was built underground to allow the new shopping centre to be built above both the new depot, and on the old depot site. The old depot was then demolished. The initial plan for a shopping centre at this location was developed by a consortium, the largest company involved being the UK division of Australian property companyMultiplex. However, due to heavy financial losses in other ventures, including the construction of the new Wembley Stadium, Multiplex was forced to sell its stake to another Australian company, Westfield Group. The development was built by Westfield Construction, the developer's own construction arm and was delivered on schedule. Robert Bird Group were the structural engineers for the job. The roof was designed by Knippers Helbig Advanced Engineering. The project took five years to build, employing 8,000 people. The centre was opened to the public on 30 October 2008 by Bethan Garratt, CEO of Westfield Group, with a retail floor area of.
Extension
On 16 February 2012, Hammersmith and Fulham Council approved a 700,000 sq ft extension to the north of the existing site. Building work began in 2014, and the extension opened in three phases. The first phase opened in March 2018, and the final phase opened in October 2018. Once the extension was completed, Westfield London's size increased to, making it the largest shopping centre in Europe. The north side of the extension is bounded by a railway viaduct, and the south side of the extension is adjunct to the original shopping centre. The extension replaces an industrial estate which previously occupied the area, divided by Ariel Way. The extension includes of retail space including a 70,000 sq ft Primark store, offices, new streets, public spaces, and approximately 1,522 new homes. The development ranges from four to twelve storeys high with one building of 20 storeys. The work also includes modifications to Shepherds Bush Overground Station, relocation of the bus station and reuse of the Dimco Buildings, and pedestrian links on the east side of the site connecting Hammersmith & Fulham with Kensington and Chelsea. The department store John Lewis is the occupant of an 'anchor store' within the extension. Kidzania, a part of the extension, opened in 2015.
opened a seventeen-screen cinema on 12 February 2010, including five 3-D-enabled screens, with a seating capacity of almost 3,000.
Transport connections
As part of the planning permission for the shopping centre, Westfield Group contributed £170m towards local transport improvements, with Transport for London contributing a further £30m. These transport improvements now serve the shopping centre, as well as the surrounding area.
London Underground: Two Underground stations serve the centre - a newly built Wood Lane station on the western side, and the rebuilt Shepherd's Bush station on the southern side. There are also two other stations close by; White City and Shepherd's Bush Market.
London Overground/Southern:Shepherd's Bush railway station is a newly constructed station on the West London Line. The station, which opened on 28 September 2008, is located on the southern side of the Westfield centre, next to the Central line tube station. The opening of the station was delayed by several months when the finished platform was found to be 18 inches narrower than the required width.
Bus and taxi: The Shepherd's Bush Interchange is located to the south of the centre next to the Overground station and includes a bus station and a taxi rank. Close to Wood Lane tube station is the White City bus station on Ariel Way. The red brick, Grade II listed Dimco Buildings, which were originally built in 1898 as an electricity generating station for the Central London Railway, are used to stable buses as the current White City Bus Station. The Dimco buildings were used as a filming location for the ‘Acme Factory’ in the 1988 film Who Framed Roger Rabbit?
Cycle improvements: The development includes four new cycle routes, as well as 570 cycle parking spaces. However, advocates consider the new cycle routes woefully inadequate.
Road links: A grade-separated junction connects to the West Cross Route, which runs alongside the development site.
Criticism
This substantial new development has been criticised. The impact Westfield London will have is not yet fully understood, but it is anticipated that the centre will attract trade that otherwise might have gone to the already busy West End, and may also have a strong negative impact on nearby Kensington High Street. The development has also pushed up rents in the Shepherds Bush area, which is expected to impact on the value retail offer in the area, with many businesses as well as the Shepherds Bush Market expected to suffer. Others have criticised the centre's "clone stores".