Hosted by EastEnders star Danny Dyer, The Wall is the ultimate game of strategy, knowledge and luck, with questions asked by TV legend Angela Rippon.
In each show one pair take on The Wall in three rounds that tests their general knowledge and trust in each other.
The fourth series begins with a celebrity special. Comedians Sarah Millican and Gary Delaney go up against the mighty Wall to try to win cash for charity. Will the new Superdrop prove a friend or foe?
The Wall is four storeys high – the equivalent of just over three double decker buses.T here are fifteen balls in play at any one time and the ball sets are checked by an independent person before play begins .
The Wall begins Saturday 15th January on BBC One. All rules and procedures on day of record are overseen by an independent adjudicator.