Kate Atkinson said this quote

This Henry lived in Edinburgh, making him inaccessible and giving her something to do on the weekends — 'Oh, just flying up to Scotland, Henry's taking me fishing,' which is the kind of thing she imagined people doing in Scotland — she always thought of the Queen Mother, incongruous in mackintosh and waders, standing in the middle of a shallow brown river (somewhere on the outskirts of Brigadoon, no doubt) and casting a line for trout.