by then rail operator Tranz Rail and heritage operator Mainline Steam. The first seven refurbished carriages entered regular service on 15 November 1999, on the Capital Connection service between Palmerston North and Wellington. Until 2015, the former British Rail carriages ran virtually all carriage regional commuter services. Most of them (104) operated in Auckland, classified SA (81) and SD (23), in push-pull commuter trains, with three to five SA carriages, an SD driving carriage (similar to the original Mark 2 DBSOs), and a DC class (four- and five-car) or DFT class (six-car) diesel-electric locomotive. Auckland has since replaced its entire suburban fleet with the purpose-built New Zealand AM class electric multiple unit. Other BR Mark 2 carriages operate on the Capital Connection (8× S class), and the Wairarapa Connection between Masterton and Wellington (18× SW class). There are also six SE class carriages, which were used with electric locomotives on Wellington commuter services between 2008 and 2011 as a temporary measure until new EMUs were delivered. The carriages were reassigned to the Wairarapa Connection in June 2013, where peak service patronage was starting to exceed the capacity of the SW carriage fleet. Mainline Steam also own four refurbished carriages, classified ML, which are based in Plimmerton (north of Wellington) and are used for its steam-hauled excursions. All New Zealand Mark 2 carriages retain their original BR running numbers. Taiwan Following a decision to electrify Taiwan's busy West Coast Main Line, thirteen 5 car electric multiple units based on the Mark 2 design were built by BREL in York for the Taiwan Railway Administration in 1976, but following problems with the electrical equipment and excessive weight could not enter service until 1979 following the completion of remedial works. They used GEC electrical equipment and were built for track gauge. They were used on the Tze-Chiang Limited Express service. They were withdrawn from service in 2009. Kenya Carriages based on the Mark 2 design were built by BREL for the Kenya Railways Corporation in the late 1970s. Numbers built (BR stock) Models OO gauge Over the years, the British Railways Mark 2 design has been manufactured by many of the British model railway manufacturers. Hornby Railways introduced Mk. 2 BFK and TSO models in the late 1960s and these have remained in production intermittently ever since, sometimes being used to represent coaches of later variants (such as the Mk.2 B BFK in