Return of the programme in which enthusiastic young cooks take part in a culinary competition to determine which of them is Britain's best junior baker. In the first heat, four contestants follow a tricky recipe for biscotti and lemonade and create showstopping racing-themed cakes, before judges Mary Berry and James Martin pick one to go through to the semi-final.

With a place in the semi-finals at stake, the bakers are tested on their know-how in the Technical Challenge, where they will try to master Mary Berry's recipe for marble cake. They must then make a splash in the Showstopper Challenges as they rustle up and present a selection of impressive under-the-sea-themed biscuits.

Four new bakers are ready to show off their skills in front of presenter Aaron Craze and the judges. Mary Berry sets the technical challenge in which they must create the perfect `melting moment' biscuits, and they get into the party mood as they make a showstopping cake fit for a carnival.

The challengers try their hand at making rock cakes and attempt to create jigsaw biscuits.

The cooks try to make delicate Welsh cakes for the technical challenge, before creating cakes inspired by fairy tales of their choice.

The remaining bakers face a tricky pastry test as they attempt to make James Martin's cheese straws, followed by a creation of their own design - a cake in the shape of a monster.

With a place in the semi-final at stake, the four young bakers face the technical challenge, featuring James Martin's new recipe for sticky toffee pudding.

The bakers are tasked with a tricky technical challenge recreating James Martin's butterfly cakes, and must create a showstopper that resembles a natural wonder of the world.

Four young bakers battle for a place in the semi finals.

The contestants are challenged to make choux buns and coffee eclairs as they battle for a place in the semi-finals.

Four bakers demonstrate their technical skills by preparing a batch of chocolate chip cookies, and face an animal-themed invention challenge.

The contestants bake scones and shortbread fancies, aiming to impress Executive Pastry Chef of Harrods Markus Bohr and the winner of The Great British Bake Off 2012, John Whaite.

The four finalists are put under further pressure as James Martin and Mary Berry set a knowledge test, before they work in a team to bake for dance group Diversity.

The four finalists face the ultimate challenge in a last bid to impress Judges Mary Berry and James Martin, but only one of them can become Junior Bake Off Champion.