page_title: British Rail Class 170
section_title: Midland Mainline
hierarchical_section_title: British Rail Class 170 / Past operations / Midland Mainline
caption_attribution_description: BR Class 170, nos. 170110 and 170117 at Derby on 18th September 2003. Midland Mainline transferred the Class 170s to Central Trains in 2004 and these units are now operated by CrossCountry.
context_page_description: The Class 170 Turbostar is a British diesel multiple-unit passenger train built by Bombardier Transportation at its Derby Litchurch Lane Works. Introduced after privatisation, these trains have operated regional as well as long-distance services, and to a lesser extent suburban services. 139 units were built, but some were later converted to Class 168 or Class 171 units.
context_section_description: Midland Mainline (MML) was the first operator to order Turbostars, the first being introduced in 1998. The Class 170/1 were built immediately after the Class 168/0 were built for Chiltern Railways. MML ordered a fleet of seventeen 2-car Class 170 units, although the first ten were subsequently made up of three cars each instead. These were numbered 170101–117. The units were introduced on stopping services from London St. Pancras to Leicester, Derby and Nottingham. Some were also used on summer Saturday-only services from London to York, which later became a year-round service with summer extension to Scarborough. Class 170s were also used on direct services between Matlock and London St. Pancras, these services ended upon the replacement of the Class 170s with new Class 222 Meridian units due to weight restrictions on the Derwent Valley Line to Matlock.
  In 2004, Midland Mainline introduced new Class 222 Meridian units, which started to replace the Turbostars. As a result, the fleet was transferred to sister company Central Trains. Ten units (170101-110) are 3-car units, and the remaining seven units (170111-117) are 2-car units. As with the three spot-hire units from Porterbrook, these seventeen units had first-class accommodation, which was declassified.
caption: A pair of Midland Mainline Class 170/1s at Derby in 2003.
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