'94 WRX, no mods.
My age 42, 4yrs NCD, clean licence, £250xs, only me driving.
My renewal premium with NU via Bennetts ELite was £806, compared with £577 last year - rise of 40%

I got the following quotes:
Keith Michaels £810
Greenlight couldn't beat £806
Barclays £796 (with £100xs)they guaranteed to match or beat the renewal, but only by £10 as it turned out.
A-plan £750 via Axa (but £500xs)
Footman James £736 (250xs)

So I went back to Bennetts and told them I was leaving them, and lo and behold they offered £735, still with NU.