text: During 2004 the company took delivery of the most recent Class 66/9 sub-class of the locomotive, which are a low-emission variant. All new locomotives for all companies are now of the low-emission "T2" type. The seven such locomotives as 66951-957.
  In 2011, Freightliner took on Direct Rail Services' 66411-420.
  GB Railfreight
  GB Railfreight initially leased seventeen Class 66/7 locomotives, before increasing its fleet to 32. During April 2006 five more low-emission locomotives (numbered 66718-722) were delivered, liveried for use on the Metronet/Transport for London contracts. A further order for five more locomotives (66723-727) was delivered in early 2007, and another five locomotives (66728–732) in April 2008. 66733-746 are formed of Class 66s from Direct Rail Services, Freightliner and Colas Rail. In 2011 66720 was painted in a special "Rainbow" livery. In June 2012, 66734 derailed at Loch Treig whilst working 6S45 North Blyth–Fort William and was consequently cut up on site and scrapped.
  The final seven Class 66s to be built for the British market arrived on 12 February 2016 aboard the cargo ship Happy Dragon at Newport docks and consisted of numbers 66773–779. On 15 February they were towed by 66708 north to Doncaster Roberts Road depot where they were commissioned and then put to work.