Errm. Lucky you. One of the best aviation bookshops in the world. Used to be in North London, and well known to the aviation reading public (which is why I’m surprised you’d not heard of it.)

http://www.aviation-bookshop.com/

Well it’s not well known to this member of the aviation reading public – hence my post. But nonetheless I’m grateful to you for the hyperlink. Via that, I hope, I’ll be able to direct my enquiry to one of the best aviation bookshops in the world.