If you can locate a copy, Roy Lockwood's 1934 short film "Airport" makes interesting viewing. It's a "day in the life" of Croydon Airport, and includes footage of an HP42 loading, fueling, starting & flying from Croydon. Also the mechanics stripping an engine from same, & some wonderful (lack of) H&S regarding solvents and climbing scaffolding towers.
There are other aircraft featured, but I can't remember the details.