Diamond Car insurance

I bought my first car today Yipee!!!

I've been getting insurance quotes all eve and Diamond has come up the cheapest.

I want to pay in instalments but I have a awful credit rating.
do you know if diamond of other car insurance companies do credit checks?

I'm sure this question has been asked before but I couldn't find the answer

thanks

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I didn't really bounce Eeyore. I had a cough, and I happened to be behind Eeyore, and I said "Grrrr-oppp-ptschschschz"