I'm pleased to report that after a long spell of a leaky boot I've eventually fixed all 3 leaks - thanks to Steve Marshall. No1 leak was from above on the left hand side. It turned out to be the boot seal which was removed. Gaffa tape was applied to the rim in the top left where the seal sits.
No2 leak: Sunroof drain on the right hand side had come out of the inlet drain ~(crazy design). Silicone applied around the pipe. No3 leak: again on the right hand side but this was the silver trim that is attached to the rear right wing by two small screw holes into the boot. Trim partly removed and silicone applied around the screw holes. Jobs well done!