The Flying Scotsman gets up steam as it is rolled out on its first public appearance after a three-year 1 million pound rebuild. The 160-ton engine, the first officially to break the 100mph barrier, was leaving its home at a former Great Western Railway shed in Southall. * West London. The locomotive will move under steam for the first time since its restoration. Its first run is planned for July 4, when it will haul a 350-pound-a-head load of passengers to York , the start of regular main line charter services. The engine will spend a week at the National Railway Museum in York, and over the summer make trips to Salisbury, Norwich and Stratford-upon-Avon.