I think the reason why most PPL(H)s are done over a period is down to he student, NOT the school. As Vee Any says, if you like Northumbria and the feel of the place ask them. I am sure they will try to accommodate you.
The previous advice cautioning about the student keeping-up is wise, in my view. You must have the relevant ground school done before it is needed for the flying. In general, the student will find full-time MUCH harder than the instructor. 5 days per week would be the max sensible, I suggest.