I've not seen the programme but a bit of googling shows that Jo Hordle's death from cancer was reported on Facebook about a fortnight ago:
https://www.facebook.com/dailyfaithword/posts/obituary-death-of-jo-hordle-a-year-in-the-new-forest/1741886425846754/
Give that the spelling used is 'Jo', rather than 'Joe', it would appear to refer to a woman, rather than to a man. That would seem to be confirmed by a Twitter feed in that name that's not been used since 2013 but which made references to the New Forest and shows her to have been a student of the Royal Agricultural University. The photo used on that Twitter page features two young women, with Jo Hordle presumably being one of them:
https://pbs.twimg.com/profile_images/2726378504/da420dab211090834c10ca45c6600cd8_400x400.jpeg