The Blue Man Group

There promises to be plenty for the whole family with BBC children's presenter Justin Fletcher and a host of iconic costume characters including Paddington Bear on hand to entertain younger audiences together with an array of child-friendly activities from top museums including experiments for young scientists by the Science Museum and arts and crafts activities from the National Gallery, Wallace Collection and Serpentine Gallery.

There will also be a celebration of 50 years of LEGO where children and the young at heart can create their own structures and marvel at amazing creations, and visitors can get a sneak preview of the bizarre exhibits from Ripley's Believe it or Not museum, which is arriving in London this summer.