Thank you! I actually started with an idea about Mundungus teaching Stan his ways and wiles after Azkaban, but then the lightbulb went on about the name Fletcher. I grew up watching Porridge (and cried for a week when Richard Beckinsale died because I adored Stan Godber) and A Night In is my favourite episode. They pretend they could go out on the town, but are choosing to stay in because it's cold out, or they need a rest etc. It sparked lots of ideas about wizards in Muggle prisons, and there you go.
Probably more than anyone needed to know there, but hey. Thanks again! I'm glad you enjoyed it :)