I have also made a start on the Wessex after debating whether to wait and see what the after-market boys come up with for the kit. In the end I went for it and made a modest start.
I have found some nice interior and exterior pictures of the real thing on the web and plan to add some extra details as I go along. I'm no expert on anything which has wings or rotors however so I don't plan on fixing any errors on the kit. I'm just going to build it and have fun!