Actually, that's not as bad as some quotes I got!! Even at 21, my insurance on a similar car to yours is £1100 p/a with my Dad on it (his presence made no difference - guess I'm too old for that
)
I've also added my Mum and Little Sister (both on provisionals) at no extra cost.
And as jiP0 said, every little helps. Even the difference between an 8-valve and a 16-valve engine can make a difference. (I had one come back at almost £500 MORE for the 16v version of my car).
The best way to reduce your insurance cost in the long term is: don't crash!! (or make any claims lol). Pass Plus is a good idea (made no difference to me, again, too old lol). Some insurers will also give a discount if you pass your Advanced Driving.
Best of luck to you bud. Entering the motoring world is bloody expensive!! (But worth it
)