I have been with Privilege for the past 12 years and they have been great and were always open to negotiations regarding renewal premiums etc..
However they do not provide multi car policies which to me was always a pain, as I had 5 cars with them at one particular time with 5 different renewal dates and 5 separate premiums.
Yesterday, I moved to Admiral multi car and the guy that I spoke to was extremely helpful and informed.
Time will tell if my move to Admiral was wise, however I got the cover I required with massively lower excesses, and a lower premium and with one policy with one renewal date to boot.