In the idyllic landscape of the Lake District, Paul and Alison Hughes are building a life for themselves and their two children; teenage daughter Rebecca and five-year-old son Joe.

Joe is a music lover who’s rarely without his headphones; to some he’s a little eccentric, to others he’s a little odd. But when Alison’s brother Eddie and his wife Nicola return to the family home to rebuild their broken marriage, they become the first people brave enough to suggest that Joe’s problems run deeper. The moment Nicola says the unsayable, family patriarch Maurice expresses his own concerns for his grandson.

When Joe is finally diagnosed with autism, the whole family finds itself in an unfamiliar and unpredictable world.

Catch the talented Lee Ingleby as Paul in this gripping and heart-rending new series.

“The A Word” starts on Tuesday 22nd March, 9pm, BBC1