Every day this week, 100 gourmet burgers are being given away for free in the heart of St Pancras International station.
The Fine Burger restaurant is rebranding itself to Prime Burger, and is running the offer in celebration of its relaunch.
The offer will last from 1pm to 2pm, and the burgers will go on a first come, first serve basis. If you want one, you'll need to to take a voucher to the restaurant - they can be downloaded here.
A range of burgers are being offered with the deal, including the Truffle burger, which consists of British beef, Tomme de Savoie cheese, French black truffle and summer truffle alioli.
The offer, which ends on Friday 3 July, also marks the start of the Great British Train Fare food festival at the London station. Over the course of the next 10 weeks, the influence of different cities and towns on British cuisine will be explored.