ON DEMAND: The Doctors (BritBox, from Thursday) Believe it or not, there are Doctor Who fans out there who feel that the original run of the series, which ran from 1963 to 1989, remains far superior to the revamped version, which has been hugely popular since its first appearance in 2005. You might agree with them after watching this in-depth, 11-part documentary, which features more than 60 hours of insights, including clips and interviews with those who have appeared in the show. SATURDAY: When the Spencers Met the Monarchy (C5, 9pm) She may have been the ‘people’s princess’, but ...