 As Tait-type rollingstock in the 1925-onwards batches entered service, some swing-door T cars were returned to steam passenger service, with modifications for electric running removed and gas lighting re-instated, but extra compartments retained.The first three were 87BT, 94BT and 96BT.It is likely that if they had been converted to T trailer cars, they may have been numbered 113T, 120T and 122T, and it is possible that 126T had not been intended as the highest numbered class member.