Is there a place you can swap store gift tokens, say House of Fraser for M&S ?

[johnnybuoy]

My wife has ended up with serveral hundred pounds worth of House of Fraser gift tokens through work but it's not the sort of store we'd normally shop in, bit pricey etc.
Is there a way of cashing them in or swapping them for another stores tokens , say M & S ?

some people sell them on ebay, you don't get the full value but at least you can spend the cash where you want.

Oooh, would be interested too! I have loads of Jo Malone tokens but am miles from the Jo Malone stores in London/Glasgow/Edinburgh. And I can't bring myself to spend £40 on a candle even with tokens.