Any experts on Argentina?

[backpackerNZ]

DD is in Argentina. She is coming home soon and has peso that she hasn't spent. What's the best way to get the currency back to sterling in the UK?
No banks here will buy peso so how does she convert it?

If it's not too much, tell her to spend it there - buy wine or something . At the airport. No-one seems to touch it in the UK.

You might get more advice on the tripadvisor Argentina forums.

Convert it over there? If she can't get £, she should at least be able to change it for € or even $