Unfortunately the demand wasn't there
The demand
is there - but your working MO, which obviously works for you in your MK base, isn't possibly suited to doing the odd day on tour elsewhere.
I've noted in previous tours that you didn't switch your location to Oxford and certainly not in advance - very few guys look at Escort Tours. If they don't know you're in Oxford, or certainly coming to Oxford, in the first place they won't book you!
Most tourers will switch their location in advance and stay for a couple of days so they can build up awareness, interest and bookings leading up to and during their tour. This also gives them the option of getting pre-bookings from guys with an AW a/c and possibly authentic feedback, cutting out the risk of fake callers.
Many tourers also work late into the evening, meaning they pick up bookings from guys who work during the day.
If you can't chop and change your location on AW due to having a permanent base, only go somewhere for the odd day and can't work into the night because you have a family, then that makes it much harder to make a success of a tour.
Fair enough - you need to make it work for you - but it would be inaccurate to say it's down to lack of demand. SPs providing a decent service for a reasonable price and who can be flexible as well as organised will always make good money in Oxford, whether that be as tourers or residents.