How can I find out if I've had any tax rebates since 2007 - Wrong address listed

[miaboo]

I've only just noticed that once again my address on my p60 is my old one, I moved in 2007 and have mentioned it a couple of times to my employer but they didnt change it. If I ever had a tax rebate during 2007 till now would the cheque have gone to my old address? How can I find out?
Thanks

Give HMRC your correct address and ask if they can provide a statement of account. Consider submitting self-assessment tax returns rather than relying on employers to give the tax office information on your behalf.