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In page British Rail Class 333:

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Units 333002 and 333004 received the new livery by September 2008, but the finish of the vinyls was unsatisfactory. New vinyls were acquired and the whole fleet was reliveried by mid-2009.[5] Beginning in late 2018 (and expected to be completed sometime in 2019), the entire fleet of 16 is going under a complete refurbishment. There will be new seats, a new livery and a refreshed interior. At-seat plug points and customer information screens will be installed at a later date.[6]