I haven't seen the programme yet but respect to him for airing his difficulties publicly, and hopefully this will enable others to feel more confident in seeking help for similar problems.
My son struggled with reading and writing at primary school, was labelled as lazy and difficult and one teacher said "he stressed her out". In fact, he became terrified to go to school when she was his teacher. We bent over backwards to sit with him and help him with reading and writing but to all extents and purposes he went into secondary school unable to read and write. The secondary school were entirely different with him, we had a meeting with his year tutor when he started secondary school and expressed how worried we were about our son, and immediately the school put measures into place to assess and help him, and I am very proud to say he eventually went on to attain 2 Degrees and is highly regarded by his employer.
Interestingly, my husband had some difficulties with paperwork at work in later years, said he had always struggled with such, and always asks me to fill in forms for him, was assessed by a dyslexic expert (who advises Judges apparently) and was himself assessed as dyslexic and we were told the condition can be hereditary and passed down through the male line. Not sure how that happens with female dyslexia?