Good boats, I used to have one and if / when downsizing will have another. The early ones were built by Thames marine and the later ones by Boating scene. Check the main bulkhead bond to hull if a late model as some Boating scene built boats did not strip the teak veneer off before glassing in. See http://www.snapdragonmirage.org.uk/
Ugliest boat ever, i was at Thames marine when they were first built & worked on the very first one for the london boat show. It was basically a Mirage 28 hull that was heavily restyled, it had its retrousse stern lopped of & a higher deck moulding added on, i seem to remember they moved the keel placing slightly as well. The deck didnt fit the hull very well & we had hells own job getting it to fit. They went bust not long after.