I cannot see the point of this question. Before entering any bit of controlled airspace, get a clearance from the service in charge of it. For CTR's that's ABC tower, usually, for TMA's XYZ approach.
"Control area" is not a clear term imho. But the English seem to like confusing phrases, these days...
Coventry are not in
are there several?
well inside the Charlie Tango NDB
it must be cosy but perhaps stuffy inside an NDB, I think