Bolton's InterCity offering under BR was two coach 158s.
Only for the minority of services, most of the daytime service was HST/Mk2 sets that went a lot further south than Manchester Airport, although of course in BR proper days they did only go as far as Manchester.
As for the topic, Hemel, Berko, Leighton Buzzard, Wolverton and Long Buckby all had long lost calls on a Euston-Liverpool service which was a bonafida IC set not some 4 car EMU!
Anglia services stopped at Ingatestone and whatever other silly stations in a blatant revenue raid, sure there are plenty others that were a flash in the pan since privatisation.