Sandi Toksvig hosts this look at Britain's low adult literacy rates, as a group of adults overcome the one thing that's always held them back and lift the stigma around illiteracy
The group meet each other for the first time and are set their first two challenges: a travel-based task to assess their reading skills and a cookery task set by host Sandi's good friend Prue Leith
The group are set a pantomime challenge and face one last test as they compete in a spelling bee. After 16 weeks of intensive learning, have they improved their literacy levels?