I'm still pretty new at this so please be nice.
I went onto the Dixons site through Quidco and these codes came up. I did a search on Dixons and can see the codes were on here a while ago, but were expired - I guess they have re-activated them. Sorry if this is a re-post!
I bought a hotpoint Fridge-Freezer and a Zanussi Washing machine and got £10 off plus 3% cashback through quidco. Worth a mention that I also got free delivery with the fridge-freezer - don't know if this is a deal they have on at the moment, as I know they recently put their delivery charges up.
I hope this is of use to someone.