Hidden Britain by Drone (2016)

S4E12 A Holly, Jolly Christmas

The festive season is in full swing at the Kelly home, where Jean prepares her renowned punch loaf, much to Grace's annoyance but Jimmy's joy. In the spirit of giving, Floyd is generously distributing all the merchandise from his pharmacy, prompting an irritated Russell to send him off on a cruise to regain control. Meanwhile, Grace grows suspicious of Quentin's unusually laid-back demeanor, initially suspecting he’s been indulging in beer with friends. When she realizes he’s been smoking marijuana instead, she fears he might repeat her past mistakes and decides that "tough love" is necessary to address the issue.