If you're chugging along at 2000ft and 90kts under the cloudbase, and he has a Do328 expected from the south in half an hour,
Well obviously they would try and get everyone from the North to stay north of Montrose. Everyone from the south to the south of Fife.
And west, west of Perth
Wait until its engines have shut down and tell everyone to report at the Castle.
like they always have.
And if you wanted to get in you would be stupid to admit that you were VFR. Just tell them you at MSA and request a procedural service. They have no option but to clear you to the beacon/IAF its the only thing they can do when your 15 miles out when you speak to them.