of the position. Only the last incumbent, Walter Chalmers, formally held the title Chief Mechanical Engineer, although the two titles are recognised as being different names for the same role within the company. Locomotives References Notes External links North British Railway Study Group Pre-grouping British railway companies London and North Eastern Railway constituents Railway companies established in 1844 Railway companies disestablished in 1923 1844 establishments in Scotland Companies based in Edinburgh 1923 disestablishments in Scotland British companies disestablished in 1923 British companies established in 1844 Early Scottish railway companies