Cambridge to Norwich route, and also on new through services including Cambridge (via Ipswich), Bury St Edmunds (via Ipswich), Peterborough (via Ipswich) and Lowestoft (via Ipswich and East Suffolk Line or Ipswich and Norwich) - London Liverpool Street via Ipswich, although with a new timetable all Class 170 London services ended in December 2010, in favour of connecting branch line trains with GEML expresses. The three-car trains used to include a buffet and larger first-class area, but because more seating was needed, the buffet area has been removed and the number of first-class seats reduced. In late 2019, these units were displaced by Class 755s and transferred to Transport for Wales by February 2020. South West Trains South West Trains (SWT) acquired a fleet of eight two-car Class 170/3 units in 2000 (later to nine units supplemented by ex-Southern 170392), to supplement its existing Class 159 fleet. Units operated on London Waterloo to , to , Southampton local services, and occasionally on services to Exeter St Davids, though this was not a regular route for these units, as they do not feature end gangways, making it difficult to provide trolley services, and they lacked selective door opening for the short platforms at stations on the route west of Salisbury. All but one of these units were transferred to First TransPennine Express at the end of 2006, in exchange for some Class 158 Express Sprinters. Unit 170392 was transferred back to its original intended operator Southern and has since been reclassified and renumbered from 170392 to 171730. Govia Thameslink Railway Southern obtained six two-car Class 170/7 units, along with six four-car Class 171/8 units, in 2003 to replace its slam-door Class 205 and Class 207 units on services on the Marshlink Line and Oxted Line to Uckfield. Southern later fitted these units with the Dellner type coupler used on its Class 171s, reclassifying its two-car units as Class 171/7, replacing the standard BSI coupler fitted to Class 170s. This was done to allow them to couple to Class 377s in an emergency. Southern later acquired 170392 from South West Trains, which became its tenth for-car, 171730. This unit had already carried Southern livery, being ordered as an add-on to a Southern order to save costs, and was delivered accordingly in Southern livery as 170727. It was renumbered and reliveried at Ashford Chart Leacon Works before entering traffic. At the end of