McDonald’s has launched a smaller and even bigger Big Mac

To mark the Big Mac's 50th birthday

Marking the Big Mac’s 50th birthday, McDonald’s has launched limited-edition mini and mega versions of their much-loved burger.

Named the Grand Big Mac, the larger version costs £3.99 and contains 741 calories. The Mac Jr, meanwhile, is 400 calories and £2.19.

A normal Big Mac – first launched in 1968 – currently costs 2.99 and is 508 calories. The new items are available nationwide until March 20. See photos beneath and find out more info here.

Steven Howells, Head of Marketing at McDonald’s UK, says of the news: “As an iconic McDonald’s product, we are proud and excited to be celebrating 50 years of the legendary Big Mac and for the first time ever in the UK, introducing the two new sizes for a limited time.”

“We know a lot of our customers will remember the 1974 launch of the Big Mac in the UK and have continued to enjoy the burger and pass the Big Mac love on since then, it remains our most iconic burger!”

Recently, Big Narstie starred alongside Lady Leshurr in an advert for the 50th anniversary of the Big Mac. It saw the pair in a rap battle, trying to list of all the ingredients of the iconic burger. Watch beneath.