Today I did something that I've been putting off for a couple of weeks: I waded into the minefield of car insurance. My renewal quote had come through from my current insurer for £430. I saw it and went 'pfft, not paying that!'. So this morning I sat down to sort it out. You'll know from a previous post that I'm a bit of a MoneySavingExpert fan, so I followed their Cheap Car Insurance guide. There was one insurer that was consistently coming out cheaper than my renewal quote by about £55 - not bad, I thought. But that insurer happened to be the company I'm already with. So knowing I could save myself £55, I was feeling pretty pleased with myself, and as this company was consistently beating its own quote, I thought I'd look on my favourite cashback website* to see if I could get any cashback by…