Colas Rail
Colas Rail is a French rail freight company, formerly known as Seco Rail. It is a subsidiary of Bouygues. History. Seco Rail was the name of the UK subsidiary of the French railway engineering company SECO which operates in Europe. SECO (Société d'Études et de Construction d'Outillage) was founded in 1931. In 2000 SECO was purchased by the road building company Colas. Whilst still based mainly in France, the company has subsidiaries in the UK and Belgium, and in 2006 became a train operator through its transportation of aggregates. In January 2008, Colas merged its Seco Rail operations  with its other rail subsidiary AMEC-Spie, under the new operating name of Colas Rail, and also acquired the Plant division of Carillion Rail which was included in the new group. In 2007, Colas took charge of the Kronospan timber flow from Carlisle to Chirk. This was previously in the hands of AMEC-Spie and subsequently became Colas' first regular freight contract, run by hired-in locomotives. Also in 2007, Colas purchased three Class 47 diesel locomotives from EWS. All three were overhauled at Eastleigh Works and in September 2007, commenced operating railhead treatment trains in South West England for  Network Rail. In late 2008, Colas commenced operating steel trains from Immingham to Washwood Heath with Class 56s hired from Hanson Traction. In 2009, it commenced a further steel flow from Burton upon Trent to Dollands Moor using its own Class 47s. In late 2009, Colas leased four Class 66s (66 841–66 844) that had last been used by Advenza Freight. These were joined by 66 845, that had last been used by Direct Rail Services. Following their owners concluding a deal to lease all five to GB Railfreight, Colas purchased five replacement locomotives (66 846–66 850, formerly 66 573-  66 577) that had previously been used by Freightliner. This coincided with Colas entering the UK coal haulage market. In 2012, Colas purchased four Class 56s. By January 2014, Colas had purchased 11. In 2012, Class 86 no. 86 701 was briefly operated on a trial service on the West Coast Main Line hauling former First Great Western Motorail wagons. In May 2012, Colas purchased the Pullman Rail rolling stock maintenance business in Cardiff. In April 2013, Colas formed a joint venture with the Go-Ahead Group to bid for the concession to operate the Docklands Light Railway but later  withdrew. In November 2013, Colas placed an order for 10 Class 70s. At the same time it purchased four Class 37s. In 2014, Colas purchased 10 Class 60s from DB Schenker with an option to purchase a further 10. In 2015, Colas will commence operating infrastructure trains for Network Rail. To operate these a further four Class 37s have been purchased. In July 2018 Colas Rail sold all ten of its Class 60 locomotives to GB Railfreight. In 2021, Colas sold Pullman Rail to Transport for Wales. Colas Rail also owns and operates a mixed fleet of on-track plant  for maintenance operations.