The work will be carried out at Bombardier's Ilford depot in Essex and the first train is due to be completed early next year. Eversholt had originally placed the contract with Railcare, but the work was retendered after Railcare entered administration in July 2013.
The contract covers heavy maintenance of underfloor equipment, refreshed interiors, and upgrading of passenger information systems. Additional work will be carried out in spring 2014 to bring the trains in line with the latest accessibility standards, including the installation of two wheelchair bays and wheelchair-accessible toilets.
The dual-voltage four-car trains were built in 1994-1995 and are used on outer suburban services from London King's Cross to Peterborough, Cambridge, and King's Lynn.
