I agree with Smurfy
It's generally best to.
there are two here in norwich and i agree with the above. if you are prepared to sift through the tat and can puit up with the other shoppers you can get some great stuff.
My best buys have been bedding, toiletries, sport stuff and jeans.
The down sides are their sizings are a bit inconsistent- but they will change items no problems and you can't rely on what they'll have.