I flew to Kortrijk several weeks ago. I routed around the northern edge of London and coasted out at DVR direct to LFAC. While en-route I asked to go direct to EBKT as there is a bit of airspace in the way.
I went to Oostend the week after as a passenger, though we went direct to EBOS from DVR. You could go via LFAC though, depending on your preferences when flying over water.