Wonder if this is one of the ex rib charter fleet ? Rogue Waiv would be able to confirm it, but there was a fleet of 6 Gemini's in the Solent as matched charter boats. It didn't make the kind of money expected so the boats were sold off. The charter boat fleet had the console at the back but someone might have moved it all around. If it is then it might be a good buy, same with a school boat, at least it might have been maintained properly.
One of them had an accident and ended up in a car park at Hamble Point Marina having cleared the bank and fence. Legend has it the engine was still running when the car park attendant found it
, hull undamaged says something for them although not sure I would want that one.
Boat, engine and trailer are going to weigh over 750 kgs so you will need brakes, would be worth checking who manufactured it and then ask them how much a 1300 kg axle is.