65 withdrawn in 1981, No. 64 in 1983. There were 18 trailer cars numbered between 529 and 550: 529-534, 540, 541, 542 gangwayed driving trailers with cab at one end. 535-539 and 543 non gangwayed driving trailers with cab at one end rebuilt as gangwayed non driving trailers 1968-1970 548 549 550 buffet cars 548 could also work with 70 class sets 550 was converted to a 70 class car in 1966 Preservation Buffet Car 550 entered preservation in 1978 with the Railway Preservation Society of Ireland, whereupon it regained its original UTA number, 87, and was painted in LMS NCC livery. No. 728, preserved at the Downpatrick and County Down Railway was formerly an MPD driving trailer. References MPD Train-related introductions in 1957