Just when you thought McDonald's couldn't add any more new items to its menu, it does it again.The fast food chain is launching a breakfast roll to its UK breakfast menu following a successful trial in Ireland.If you've found it tricky in the past to decide which McMuffin to get, well you can now have it all in one bap.And it's even better news for those who aren't a fan of savoury muffins as it comes served between a bread roll instead.From Wednesday, shoppers will be able to order the