I feel like a total idiot in my ignorance here but just don't know what to do.
I did an Experian credit check on a whim recently as DH and I have been discussing possibly getting a mortgage for a bigger home next year. I've never done a credit check before. To my shock I came out with a mediocre score - in the 700 region - and I just don't get why.
I have no debt - I've even paid off my student loan. I've never taken out a mortgage. I used to loan a car but made all the payments on time and ending up buying it outright in cash when the initial agreement finished because I liked it so much. I've never borrowed money for any other reason other than the student loan - I've never even used a credit card. I've never not paid a bill on time. I have dipped into my overdraft a few times but have always immediately cleared it using money from my savings. I've been in full time employment continually since the age of 21 (now mid-30s) so have always had a decent amount coming into my bank account each month like clockwork and have built up a fair bit in savings too.
What can be going on?
First, the credit check claims I have a debt of £700. I shouldn't as I've never taken this money out so am guessing some sort of fraud is involved. But if someone has taken out debt in my name, what the heck do I do about it? I have no idea where they've taken this loan out and don't know how to find out. It makes me worry that someone has been doing this for some time, which would explain damage to my credit score I guess.
Secondly, could my lack of history of borrowing or using a credit card actually be counting against me?
Thirdly, would the fact that I've sometimes spent more than I've earned (eg the odd month paying my share of a big family holiday) be screwing me over? I've always had enough savings to cover the shortfall at once though...
Again, really embarrassed to be ignorant but wondering if anyone can shed light on what might be happening here and how I can build my credit rating up.