Speaking to the Evening Standard, commuter David Banks said: "There were just a lot of police around, police vans and cars and officers around a skip. The skip was between one of the exits to the railway station and car park itself."
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Essex Police have won a legal challenge over damages following Michael Barrymore's arrest, he will only get a nominal payment.
Emergency services were called to Chamberlayne Road in Kensal Rise at around 3:30pm.
Sir Martin Moore-Bick said there are more than 200,000 documents still to disclose.