To answer the original post, I have flown over Wakefield many times.
I just give them a call and tell them something along the lines of, I will be overhead Wakefield for approx 10-15 minutes, not above (for example) 2000ft, on Leeds QNH and will remain clear of controlled airspace.
When done I let them know this and that I am moving on, never had any problems, and they are very happy if you keep them informed what your plans are.