Mr Ulster Aviation
Lee,
A chap called Guy Warner is a fund of knowledge about all things aviation in Ulster. He has published widely, including a book about RNAS Eglinton. He is also a leading light in the Ulster Aviation Society and they have a museum at Long Kesh.
If your request relates to the new book on Naval helios, I would think Guy is your man.
If you PM me, I shall try to find his address amongst the junk heap, laughingly called - but not by the current Mrs O-D - as my office.
O-D