Mary Berry has "real trouble" with her 'Great British Bake-Off' co-stars.

Mary Berry

Mary Berry

The 81-year-old judge admits she tires of co-critic Paul Hollywood and presenters Mel & Sue's constant double entendres on the popular baking competition and constantly tries to keep them "all level" - even though Paul insists she unintentionally started the saucy humour on this year's show.

Paul said: "The first challenge we did was Madeira cake and the first thing out of Mary's mouth was 'Nice crack'.

"And that set the tone, really. It was hilarious. Start as you mean to go on!"

Mary added: "I have real trouble with them.

"This goes on the whole time, all the way through and I try to gather them all together. But the other three, they're all encouraging each other and I'm trying to keep them all level."

Mary believes the key to the show's popularity is that it is a programme the whole family can enjoy.

She said: "I'm not surprised it's a popular show because there are so many things on televison that aren't authentic and that are noisy and dramatic.

"There isn't another programme where the whole family will sit in a row, from the baby to the grandmother, and watch and be enthralled by it."

And the popular chef - who has children Annabel and Thomas with her husband, Paul Hunnings - is proud that her young grandchildren have embraced her love of baking and they already impress her with their culinary creations.

She told the Daily Express newspaper: "All my grandchildren bake. On a Saturday, Annabel's boys, Louis and Toby, always bake. Louis makes a chocolate cake, Toby makes banana or lemon drizzle. They're 12 and 10 and they can do it totally on their own.

"My son's twin girls, Abby and Grace, are 14; they make birthday cakes and like to do it on their own with Mum out of the way."