estimated to have the locomotive back in service by early 2016, with new electronic equipment needed to operate on the mainline. The final cost of the restoration amounted to £4.5 million, having risen by a £300,000 estimate in the summer of 2015 due to the further necessary work and the need to meet the deadline for the return to service. Return to service On 8 January 2016, Flying Scotsman moved under its own steam for the first time since 2005. Following tests on the East Lancashire Railway, its inaugural mainline run was cancelled due to faulty brakes. It was rescheduled for 6 February, hauling The Winter Cumbrian Mountain Express from Carnforth to Carlisle, still wearing its 2011 wartime black livery with the number 60103 on the smokebox and its LNER wartime numbers, 103 and 502, on the cab sides. After it was repainted in BR Brunswick Green, Flying Scotsman returned to London King's Cross on 25 February with a run to York. Thousands of people lined the route, and the train was forced to stop due to members of the public trespassing on the line near St Neots. Flying Scotsman has run on British heritage and mainline railways since its return in 2016. In October 2018, six years after Pegler's death, it hauled the Farewell Alan Pegler special from King's Cross to York, organised at the request of his daughter. In his will, Pegler requested for half of his ashes to be placed in the firebox of the locomotive as it ascended Stoke Bank. The climb was accompanied by a long blast of the whistle as passengers onboard gave a moment of silence. In January 2019, Flying Scotsman hauled the non-stop Scotsman's Salute from King's Cross to York, this time as a tribute to McAlpine following his death in March 2018. In April 2022, the engine was withdrawn for an overhaul in preparation for its centenary year in 2023. Following the work it will be certified to run on the mainline until 2029, after which it will run solely on heritage railways until 2032. Its first engagement following restoration was to be a summer visit to the Bluebell Railway, but it was postponed and rescheduled for 2023 after a broken piston ring was discovered to have damaged a cylinder. It appeared at London King's Cross as a static display for two days to commemorate the 170th anniversary of the station's