Roisin Conaty who plays "her", keeps talking about having Wicky's "Big Head". Greg Davies, who plays Wicky is famously known as the Taskmaster in the TV show of the same name. The prize for winning Taskmaster is a bust of Greg Davies' head and Roisin was a contestant on the show in series one, though she failed to win.
The location used for the victim's house is Valence End Farm, Dagnall Rd, Eaton Bray, Dunstable, Bedfordshire, LU6 2LD.
The same location also features in another Greg Davies comedy, Man Down (2013) as Nesta's farm.
The interior and exterior of the farmhouse used as the main location is the same house used in Man Down (2013) S2E1 - Finding Nesta, also starring Greg Davies. The farmhouse is also the same in BBC's Worzel Gummage (2019).