I would try a comparison site though Kurtoski and try adding/changing things to see what lowers your premium best.
Things like adding named drivers (older family members), limiting your yearly mileage to the bare minimum, increase your voluntary excess, tracker alarm (can be had quite cheaply nowadays), garage the car at night if possible etc.
It's still going to be high because of your age & convictions but you never know you may be able to get a few hundred off it at least.