DO NOT TRUST THIS LOT!
I used Moneysupermarket to obtain quotes for car insurance and chose Allianz (they were not the cheapest). I filled in my details on their website, created an account and then they declined me. This is the first time this has happened in over 40 years of driving yet they waited till I had spent time giving all the details. I was unable to contact them - no surprise! I cannot express how angry I am with this lot as they do not say why they cannot insure me. It could affect future applications for car insurance.
Update: They cannot explain why it was refused and stated I did not have an account, which was rubbish. I did have an account but no policy. They sent me videos of how to etc which is most patronising as I have has car insurance for over 40 years and know my way around sites. When I asked them to delete my account - which they now accept I have - and delete my data, they sent me another video.
After my angry reply, they now are in the process of removing my data from their site.
Reply from Allianz car and home insurance