I was vaguely aware who Alan Cumming is. For independent film consortiums, Miriam Margolyes seems to be the pensioner of choice to go on adventures and sell the results to BBC, ITV or Channel 4. She’s been sent to America a few times and to Australia. The latest wheeze is Scotland. Yes, Bonnie old Scotland. Who’d have thought of that? Monopoly money for old rope. They flung in Alan Cummings as a guide, and driver of their motorhome. He’s...