67023 Stella was built at Alstom's Valencia works in May 2000, entering traffic with EWS, under lease from Angel Trains. Subsequently, DB Schenker Rail UK (now DB Cargo UK) took ownership and in October 2016 offered 67023, with 67027, for sale.
Colas Rail purchased the pair in early 2017 for the haulage of high speed test trains for their Network Rail contract, repainting them in Colas orange, yellow and black livery in April 2017.
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