NewsgalleryWestfield London expansion opensBookmarkShareNewsByGoolistan Cooper15:18, 20 MAR 2018Tom Daley opened the adidas store (Image: Get West London)1 of 17Inside the £600m Westfield extension (Image: Get West London)2 of 17John Lewis (Image: Get West London)3 of 17Balloons help mark the opening of the Westfield London expansion (Image: Matt Crossick/PA Wire)4 of 17The rippled roof of the extension (Image: Get West London)5 of 17John Lewis is spread over four levels (Image: Get West London)6 of 17Inside John Lewis (Image: Get West London)7 of 17Staff dancing before the opening of the new H&M store (Image: Get West London)8 of 17The £600m Westfield expansion (Image: Get West London)9 of 17Olympic medalist Tom Daley designs a trainer at the adidas store with Adrienne Herbert (Image: Get West London)10 of 17The new John Lewis store (Image: Get West London)11 of 17John Lewis occupies four floors within the new Westfield extension (Image: Matt Crossick/PA Wire)12 of 17H&M staff throwing shapes ahead of its opening (Image: Get West London)13 of 17The £600m expansion project makes the shopping centre the largest in Europe (Image: Matt Crossick/PA Wire)14 of 17Through the floors at John Lewis (Image: Get West London)15 of 17General view of the new Westfield London expansion (Image: Matt Crossick/PA Wire)16 of 17The bigger and better Westfield London (Image: Get West London)17 of 17