Don't forget that Star Alliance Gold card on your next visit to London – it'll get you a free upgrade to first class on the Heathrow Express.
Okay, it's not exactly a long trip – the train darts between London's Heathrow Airport and Paddington in 15 minutes.
But instead of slumming it in the economy Express carriages you'll enjoy a bump into the swish Business First carriages at the front and rear of the train, with a little more legroom than 'economy plus wider seats in a more relaxed 1-1 layout, a personal table and an AC power socket at each seat.
You'd normally have to pay an extra £8 (A$16) pr trip for the privilege of being in the primo carriage, so by any measure you're ahead.
So how does it work?
Buy a standard class single or return ticket for the Heathrow Express, then sit yourself in a Business First carriage and show your train ticket and Star Alliance Gold card to the attendant.
And that's all there is to it.
The special promotion is open to all frequent flyers holding Gold status with any Star Alliance member airline – you don't even need to have flown into London with a Star Alliance airline – and runs from February 15 until further notice.
Review: London's Heathrow Express
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About David Flynn
David Flynn is the editor of Australian Business Traveller and a bit of a travel tragic with a weakness for good coffee, shopping and lychee martinis.