Bobby Sirrah, who played a footman in the film, originally expected to spend just six days on set when filming began in North Wales in summer 2024. Bobby on the set of Madfabulous (Image: Bobby Sirrah)“I remember Celyn turning to me on set one day and saying ‘this is turning into a pretty good part’.” Bobby Sirrah said the actors, who were part of the serving staff of the house, ended up like family (Image: Bobby Sirrah)Scenes were also shot in Glynllifon Estate (Plas Glynllifon) near Caernarfon, Pwllheli and Penrhyn Castle in Llandygai. Bobby said seeing North Wales appear on the big screen and seeing local stories being told too made him "immensely proud". The actor also praised the talent available in North Wales, saying many performers had trained professionally in cities such as London before choosing to return home.