Tony Bartlett, a postman, inflicted 'catastrophic injuries' on his four-week-old son Atticus at their home in Chard, Somerset, after he returned with his partner from a night out

Tony Bartlett, 39, of Axminster in Devon, has been convicted of murder after shaking his four-week-old baby Atticus to death

Tony Bartlett was convicted of murder at Bristol Crown Court on Wednesday afternoon