four sets consisted of three Mark 3s, this was later increased to four from May 2009 although these were not refurbished internally. Following Wrexham & Shropshire's reduction in service levels from December 2010, a single Mark 3 set was leased to Chiltern Railways to operate a Birmingham Moor Street to London Marylebone peak-hour service. Fleet Depots The Mark 3 sets were based at Chiltern Railways' Aylesbury depot. They were also stabled at Wembley depot and in the bay platforms at the south end of Wrexham General that were reactivated. See also Railways of Shropshire References Further reading External links Arriva Group companies Defunct train operating companies John Laing Group Open-access train operating companies Railway companies established in 2008 Railway companies disestablished in 2011 Rail transport in Oxfordshire Rail transport in Shropshire Rail transport in Wolverhampton Renaissance Trains Transport in Wrexham County Borough 2008 establishments in England 2011 disestablishments in England