To celebrate the 150th anniversary of the opening of the Metropolitan Railway special services ran in January 2013 using a restored 1892 "Jubilee" carriage, 1898–1900 bogie carriages, steam locomotive No. 1 and electric locomotive "Sarah Siddons". Further events are planned in 2013 for Locomotive No. 1, "Sarah Siddons" and the Jubilee carriage, including a "Steam back on the Met" scheduled for May. To celebrate the 150th anniversary of the District Railway the London Transport Museum are restoring a three-car Q Stock train to run on the District Line as special services during 2018. After the District Railway had electrified in 1907 it sold most of its locomotives, but in 1925 two locomotives (No. 33 and No 34) remained for departmental use. In 1926 No. 33 was scrapped and replaced by Metropolitan Railway A Class No. 22, which became District No. 35. These were replaced in 1931 by two 0-6-0T goods locomotives bought from the Hunslet Engine Company. When they passed to London Transport in 1933 were numbered L.30 and L.31 and subsequently withdrawn in 1963. In 1933 the Metropolitan Railway was still using steam locomotives on passenger trains. The LNER took over responsibility for steam working in 1937 and LT kept eleven locomotives for departmental work. From 1956 these were replaced by ex-GWR 0-6-0PT pannier tanks, to be replaced by diesel-hydraulic locomotives in 1971. In 1899 the Central London Railway had two tube-gauge steam locomotives that were oil fired underground and could run on coal above ground. They were sold by 1921. A fleet of 37 battery-electric locomotives are in service, able to take power from the electrified rails or from an on-board battery. A fleet of 4 diesel locomotives are currently used as shunting locomotives in Ruislip Depot due to growing restrictions on where they can operate on the network.