It then spent a short time in storage at Inverurie Works, and at Hyndland Shed in Glasgow before being transferred to departmental use as test train "Gemini" (or Lab 16) for use at the Railway Technical Centre, at Derby.
D5901 was transferred to the departmental fleet of the Railway Technical Centre in 1969.
Charles Osmond Frederick is a British engineer who worked on interaction of rails and wheels at the British Railway Technical Centre, Derby.
On 7 June 2007, Metronet announced that the contract for operating and maintaining the test track had been awarded to Serco Assurance (formerly Serco Railtest), based at the Railway Technical Centre in Derby.
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