The "Haytor Hoppa" route 271 in Devon that operates four circular trips from Newton Abbot onto Dartmoor. It only operates on Saturdays from mid-May to mid-September.
ENCTS Passes are not valid on Falcon between Cullompton and Taunton, but passengers over 60 can get one-third off the adult fare. However passengers have to buy a ticket for the full journey they are making, they cannot just buy a Cullompton-Taunton or v.v. ticket and use their ENCTS pass for the remainder.
(just to be clear. ENCTS passes ARE valid for journeys wholly between Plymouth and Cullompton; and between Taunton and Bristol).