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I have to say I found it a bit huge and horrible, full of crowds. There is an outdoor route from M&S to John Lewis, much calmer and useful to use if you find the inside too busy. Use the app to work out where you want to go and enter at closest point. Cycle parking difficult to find, apparently at the back of the car park. Haven't seen loads of cars going in but loads of pedestrian traffic from the stations.
Sorry, bit of a random post but anyone been to Westfield? If so, was it huge and horrible (hubby and son have Aspergers so don't like crowds etc). What was parking like? Any feedback gratefully received.