'In 2015, Jones was diagnosed with primary progressive aphasia, a form of frontotemporal dementia that impairs the ability to speak and communicate. He had first given cause for concern during the Monty Python reunion show Monty Python Live (Mostly) in July 2014 because of difficulties learning his lines. By September 2016, he was no longer able to give interviews. By April 2017, Jones had lost the ability to say more than a few words of agreement.
Jones died on 21 January 2020 from complications of a rare form of dementia at his home in North London.'
He went to the Royal Grammar School, which is very well regarded. It started as a free school in the C16. The fees are now very high and the school functions as a sausage machine from which the boys go to Oxford or Cambridge n the main. It also has a prep school.