Vage
You claim HTD even though you use MT?
Strange as it seems, this was a situation approved of at Waddington some years ago (and may still be going on)
Those of us allocated quarters at Scampton were given HTD/RPOD (Residence to Place of Duty IIRC) even though MT provided a bus service. The reason for the HTD/RPOD was quoted as "we can only provide one bus at any one time and if everyone used MT we would need to provide 4 or 5". They just accepted that sometimes people would use MT and claim HTD/RPOD.