Did the 30 hour PPL complete in under 4 weeks, 1964 July/August at Thruxton on Jackeroo. (Modified Tiger Moth, lacking it's high cruise speed.) Had previous gliding experience. No radio, electrics, brakes, starter, to worry about. No ATC at Thruxton, and I think about 10 trainers including Piper Colts. Near to Army Air Core training airfield, so plenty of traffic to look out for. And not much inside the cockpit to distract.