You could try contacting Colin Smith, the designers son who holds his late fathers plan collection. It cropped up on another forum and was suggested that it was quite likely that the Police launch info was available.
Limited boat plans available from Colin Smith, Bournemouth Tel: 07747722724,
give him a ring he has lots of his fathers VERON plans(boats + planes)
Seem to recall the boat was built around a box structure with the formers added after the box was all glued together. Similar construction on Veron RTTL
Regards Ian.