 c2c ran a special "Farewell to the Blue Train" railtour service to commemorate the last day of running in passenger service of the blue livery on Saturday 5 March 2011.On 9 November 2006, unit 357028 was sent to the Velim railway test circuit in the Czech Republic for safety testing to obtain certification for a regenerative braking system which had been trialled for many months on the Class 357 fleet.In March 2007, 357028 returned from the Czech Republic, having gained safety certification, and c2c began fitting the regenerative braking systems to the rest of its Class 357 fleet, becoming the first UK train operator to do so.