OK - so I retrieved the Sea King from the stash, and after reviewing all the resin conversion bits and the three sheets of etch, I renewed the search for the Swordfish.
Surprise, surprise, in a box with a catalogue label bearing the entry "1/48 Swordfish 1" I found it.
Not too many comments please, my wife has already had a field day, the words 'boy look', as in 'you only had a boy look' have been bandied around freely. Anyway I have the kit now, and will post pics shortly.