Roger Kirby is 71 years old as per his Wikipedia profile while Jane Kirby’s age is still unknown to the public.

Roger Sinclair Kirby, FEBU is a British retired prostate surgeon, urology professor, researcher, and writer who specializes in men’s health and prostate disease.

Speaking of Jane’s profession, she used to be the editor for a British magazine called Country Living and later worked as the business manager at Roger’s clinic after their marriage.

Kirby earned a bachelor’s degree in medical sciences from St John’s College, Cambridge, in 1972, and finished his clinical training at Middlesex Hospital.