In shots from the very top of the parsonage staircase it is possible to see on the left-hand wall Branwell's famous group portrait of his sisters, now in the collection of the National Portrait Gallery in London. However it appears to show the painting before he painted out his own self-portrait between Emily and Charlotte.
In an Express newspaper interview on December 29 2016, director Sally Wainwright revealed that constrictions in running-time had meant cutting almost all of both scenes featuring her 'Happy Valley' actor James Norton. In fantasy sequences he was the dashing Duke of Zamora and had a duel with 'Napoleon' as the Duke of Wellington. He can be glimpsed as the latter in an early scene.