The Flying Scotsman was the first train in the world which recorded the top speed of 100 Mph. Although, Train 'City fo Truro' achieved the top speed of 102.3 Mph first as recorded by Railway journalist Charles Rous-Marten but that can only be a claim because no second timekeeper was there to confirm ther readings. The Flying Scotsman has operated via the East Coast Main Line between Edinburgh, capital of Scotland, and London, capital of England. The name was officially adopted in 1924 although the service began in 1862. Virgin Trains East Coast currently operates the Flying Scotsman. The Flying Scotsman runs over the East Coast Main Line which was built in the 19th century by many small railway companies. The North British Railway (NBR), the North Eastern Railway (NER) and the Great Northern Railway (GNR) were the only three companies left to control the route after many mergers and acquisitions. These three companies established the East Coast Joint Stock in 1860 and from this agreement that the Flying Scotsman came about.

With simultaneous departures from the GNR’s London King's Cross and NBR's Edinburgh Waverley at 10:00, The first special Scots express ran in 1862. By the time of the race to the north in 1888, improvements in railway technology and competition reduced the journey time to 8.5 hours from the original journey time of 10.5 hours which includes a half-hour stop at York for lunch. From 1896, The train was modernized with features such as corridors between carriages, heating and dining cars. The total journey time remained at 8.5 hours however the york stop was reduced to 15 minutes because the passenger could now take the luncheon on the train. Flying Scotsman, in 1928, was given a new type of tender with a corridor. It meant that a new crew could take over without stopping the train which meant that the journey time was further reduced by half -hour. On May 1, This tender allowed to haul the first ever non-stop service.

The Flying Scotsman was extremely long an heavy train considering the fact that those were the days when road and air transport were not common. This train was a major link between the capital cities of England and Scotland. Due to the train being long and heavy, it has required very powerful locomotives. Some locomotives were specially designed for the Flying Scotsman. Locomotives used to haul the train included Stirling 4-2-2 'Singles' (GNR 1870), Ivatt Class C1 (GNR 1897), Gresley A1 and A3 Class Pacifics (LNER 1922), Gresley A4 Class Pacifics (LNER 1935), British Railways Class 55 Deltic (BR 1961), and British Rail InterCity 125 (BR 1976).