Ruby Bentall (Minnie Mude) & Richard Harrington (Gabriel Cochrane) also worked together on episodes 2.4, Episode #2.4 (2016), of Poldark (2015) as Verity Blamey & Captain Andrew Blamey respectively.
When talking about cricket, Daniel mentions three overs being fifteen balls. Up to about 1880 there were 4 balls per over, then in the next couple of decades 5 became more popular (when 'Larkrise' was set) with 6 becoming the norm in the 20th century.