It's time for the new Byron special and this time around it's the Clucky Balboa chicken burger.
The sandwich comes with a choice of buttermilk fried or chargrilled chicken breast and is topped with guacamole, Sriracha mayonnaise, sliced pickles, and iceberg lettuce.
The burger usually comes in at £10.50 (£1.35 extra for homemade buffalo sauce) but this weekend you can nab a Clucky Balboa for free - if you can find a miniature chicken first.
In order to qualify for the free burger, you'll need to find one of more than 1000 tiny chickens (not real ones) which will be hidden by 10am near Byron restaurants across London on 7, 8 and 9 October. You'll know you've found the right chicken as it will have a tag around its neck like the one below.
You'll need to be 18 or over to redeem a chicken, apparently, and you'll receive either 2, 4 or 6 Clucky Balboa burgers per tag found (number is indicated on the tag). Full terms and conditions can be found on the website.
Simply present your chicken at any London Byron restaurant to claim your reward, and you'll be a winner with a chicken dinner.