text: 66779 remained under a tarpaulin until 10 May 2016 when it was revealed at the NRM York with a special livery and nameplates to commemorate the fact it is the final Class 66 ever built for the British market. The locomotive has been painted in BR Lined Green and named Evening Star, in reference to BR Standard Class 9F 92220 Evening Star which was the last BR steam locomotive to be built. It was unveiled in a special ceremony inside the Great Hall at the National Railway Museum in York on 10 May 2016 before staying there opposite its namesake, No. 92220, for two weeks. At the same ceremony, the CEO of GBRf, John Smith, handed the curator of the National Railway Museum a document offering 66779 to the national collection when it is retired in about 40 years time.
  In addition to those locomotives sourced from domestic operators (Direct Rail Services, Freightliner, Colas Rail and DB Cargo UK), eight further locomotives have been obtained from European operators. A further five have been purchased from Heavy Haul Power International and will be transferred from Germany beginning in April 2021. The locos will go to Doncaster to be converted to UK specification.
  Former operators
  Advenza Freight
  Advenza Freight, a Cotswold Rail subsidiary, operated Class 66841-844. They were primarily used on Advenza's scrap and cement flows. The locomotives originated from the batch that Direct Rail Services returned.
  Advenza Freight ceased operations in October 2009 and the Class 66s returned to storage. These locos were housed at Gloucester Carriage Sidings where Advenza Freight was based.
  Fastline
  Fastline operated intermodal services between Doncaster and Birmingham International Railfreight Terminal (BIFT), and Thamesport, in North Kent, using refurbished  locomotives. The company ordered five Class 66/3 locomotives to operate a coal flow from Hatfield Colliery, which were delivered in 2008.