Get yourself in the car and up the motorway to Coventry. Peter Lines of ATA taught me more about Nav and Met in a week then Oxford could in 6 months.
If the courses are booked up maybe he would be interested in private tuition.
I don't have his number but ATA are bound to advertise in the popular aviation press.
Good Luck Rupert. Don't give up, all the hard work will be worth it.