It's a little known fact but BAA operated airports (Heathrow, Gatwick, Stansted, Edinburgh and Glasgow to name a few) offer a money back/price guarantee on goods purchased at their airports. This can be great when faced with the uncertainty of picking up a bargain at the airport or waiting to you get to your destination to see if things are cheaper. To qualify, you just need to purchase using BAA's loyalty card - Worldpoints. Sign up online for bonus points and easy registration www.baa.com/worldpoints

A list of BAA operated airports can be found at www.baa.com