Shaken Udder has been ­revamped and its sugar content reduced in a bid to appeal more to the lunchbox market.

The premium milkshakes which are sold in Waitrose, Ocado and high-end food halls now contain less than 5% sugar, down from 6%. The Shaken Udder logo has also been accentuated as part of the brand's new look.

"Reducing the sugar content is a first step in ­attracting more parents to the brand, while making it even more healthy for adults," said co-founder Jodie Farran.