It's not illegal if the runway is in Class G and there is no ATZ.
Not only was Elvington operating, Air-Ground if I remember correctly, but Church Fenton was also active and Elvington lies directly under the stub, almost on the centreline for the Church Fenton MATZ. The fact remains that the competition was notamed and the box was just to one side of the runway itself. The pilot of the aircraft made absolutely NO attempt to contact Elvington - I know, I had the radio with the Elvington frequency on the table in front of me, it was switched on and working with an appropriate volume set. Elvington, on the other hand, made several attempts to contact him.