The three main symptoms of the illness are involuntary shaking or tremors, slow movement and stiff and inflexible muscles.
However those with Parkinson’s disease can experience further physical and psychological signs. These include problems with balancing, insomnia, memory loss, decreased sense of smell and depression and anxiety.
The technology reporter added that his symptoms are largely under control and that he will continue working as a journalist for the time beings.
In good spirits, Cellan-Jones added: “I’m getting good treatment and the symptoms are mild right now – so I’m carrying on as normal.
“Onwards and upwards!”