I took GAP insurance out this evening. Possible special offer of £30 off.
I used
www.click4gap.co.uk
It has cost me £139 for 4 years based on the following:
Purchased for £9960 on 4/8/17. First registration date April 2013 Cover amount £15000. The insurer/underwriter seems to be "Red Sands Insurance Company", a bit of research seems to suggest that they are OK.
Today they have a code on their website "FLASH30" which reduced my premium from £169 to £139. The biggest player in the GAP market seems to be Warranty Direct, but their equivalent price is about £217 or so.
I think the "cover amount" is a bit of a fantasy. I could have bumped it up to £25K for no additional premium. I'm assuming that in reality, all I would get is my purchase price of £9960. But for £139 for four years, it's the proverbial "cheap as chips".