Hi Karl I know exactly how you feel. When I first pass my test I fell in love with a new Nissan Micra, it cost £5,000 but the insurance was well over £2,500! Younger drivers always pay hefty insurance premiums when they first qualify and it's just not fair. With a pass plus certificate you should also benefit from a discount but in your case it's absurd that they are still quoting you £6,000. I think you may be doing something wrong in your application or the car you have is brand new so they have to take that into consideration. Unfortunately you can't win, if you buy a new car and the value is high the insurance company will take this into account and make the premiums higher for a young driver. If you have a cheap car you'll still probably pay insurance that costs more than the car itself so what can you do?
Many male driver's put on an additional driver on their insurance policy as it can sometimes reduce the insurance quote. This works well if you have a girlfriend, spouse or partner, my insurance premium halved when I added my girlfriend. When I called the insurers and asked why they said it was because female drivers are less likely to be involved in an accident so this could work for you. Also you can call a few insurance companies up and talk to them over the phone, you can eve haggle and get the insurance quote lowered. If you're lucky enough you may even get someone who will help you lower your premiums as this happened to me. Increase your voluntary excess and limit your mileage, this makes a difference to how much you will be quoted.