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'''50044 Exeter''' (D444) is a '''BR Class 50 diesel locomotive'''.  ==BR Class 50==Fifty English Electric Type 4 (later BR Class 50) diesel locomotives were built by English Electric at their Vulcan Foundry Works plant in Newton-le-Willows between 1967 A brief description and 1968. These 'advanced' Type 4 locomotives were amongst history of the first in class can be found on the UK to include innovative features such as electronic control, dynamic braking and electric train heating incorporated into their design. The fleet was delivered in [[BR blue to the London Midland Region and utilised on all types of traffic, including prestige trains such as the 'Royal Scot'.<ref name=SVR156>SVR News 156</ref> When built they were numbered in the D4xx series. They later became BR’s Class 50, being allocated [[TOPS codes50007 Hercules|TOPS numbers50007]] in the 50xxx series. The class was nicknamed "Hoovers" because of the distinctive sound of the inertial air-filters with which the locomotives were originally fitted. Initially the locomotives were used to haul express passenger trains on the West Coast Main Line (WCML) between Crewe and Scotland; that section not then being electrified. This often entailed ‘Multiple Working’, with two locomotives under control of a single driver. By 1974 the northern WCML had been electrified, and the Class 50 fleet was being transferred to BR’s Western Region to work main line passenger services out of London Paddington. The Class 50’s did not originally carry names, but in the late 1970s BR agreed to their being named after Royal Navy vessels with notable records in the First and Second World Wars.  Withdrawal of the class began in the early 1990spage.