Try http://www.greenlightinsurance.co.uk/

Just sorted insurance through them for my megane 230 f1, I was quoted 1700, 1400, 900.... 1200 from need 2 insure.

Greenlight insured me for £550.

Fill out the form online, it takes a day for them to give you a quote, but its well worth a try mate.

Hope this helps.