Our booking engine at tickets.railforums.co.uk (powered by TrainSplit) helps support the running of the forum with every ticket purchase! Find out more and ask any questions/give us feedback in this thread!
Hence the ITMP (Incompatible Train Movement Plan).
Or they could have picked up their wallets in CPD and paid for fitting the 1992TS with ATMS, the equipment was all purchased but the fitment filed into the "Too Difficult" and "We're AC Tractioning Soon" piles. (Around 10 years ago)