Age is a factor, of course, so is accident record and postcode. I paid just over £600 this year for owner only driving, clean record and licence, age 70, approx 7000 miles per year. I guess my postcode is classified as oter London. I guess shopping around could get a better deal.
All motor insurance is going to take a major rise according to the papers. It's due to the cost of insurance scams: a bunch of yobs contriving to have an accident and then all claiming for whiplash against you. There have been many tens of thousands of such scams during the last year.
Robin