English: Inside the A stock #1 This is the view inside the A stock train. It is remarkably different to the layout of the stock used on the Metropolitan line today, as those units have been refurbished since the 1960s and according to the tube maps inside the carriage, these units were also used on the Circle and District lines before the D and C stock came along in the 1980s and 1990s respectively. The seating is longitudinal instead of transverse, there are hanging straps (the bobbles on the end of the springs hanging off the ceiling) instead of grab handles and the floor is wooden instead of rubber tiled. The "No Smoking" signs on the windows are modern additions, as these units were in service and finished their career on the Circle and District lines before the Kings Cross fire in 1987.