An update to this thread. I hadn't realised how much the weighting had changed recently to the actual vehicle model as opposed to other factors.

As I said earlier, my insurance renewal for a Ford Fiesta was coming in at around £1400. I'm greater London, clean driving licence, no recent claims and 16 years NCD. Ford Fiesta isn't brand new and value around £5000. I used the same insurer, got a quote for a Volvo I was thinking about buying, value £25,000 and the insurance quote was £600. Feels crazy that to insure a vehicle 5x the value of another cuts the premium in half! It seems like vehicle models drive the price more than other factors (including the vehicles value) nowadays. Might do a quote on a Range Rover for the fun of it....see if anyone would actually insure!