"Harry Potter" stars Matthew Lewis (Neville Longbottom) and Shirley Henderson (Moaning Myrtle) appear in the episode. Lewis is from Leeds and is able to speak with his natural Yorkshire accent.
Amelia Bullmore and Sarah Lancashire appeared in Coronation Street (1960) together. Amelia played Steph Barnes, wife of Des Barnes who after his separation from Steph, went out with Raquel Wolstenhulme played by Sarah.
Kevin Doyle (John Wadsworth) & Amelia Bullmore (Vicky Fleming) also worked together on Scott & Bailey (2011) as Geoff Hastings & DCI Gill Murray respectively.
Julie Hesmondhalgh and Katherine Kelly both played in Coronation Street (1960) at the same time, as Haley Cropper and Becky McDonald.
Siobhan Finneran (Clare Cartwright) & Kevin Doyle (John Wadsworth) also worked together on Downton Abbey (2010) as Sarah O'Brien & Joseph Molesley respectively.