Central London transport is world class, and she was in Central London, so it was not luck
Of course the rest of the UK looks at London's well funded bus and tube network the same way we look at Tokyo, a symbol of unattainable perfection.
When it works and it's reasonably priced and you get a seat in a good environment it's the best form of travel. It's a shame those conditions so rarely all hold at the same time.
Chap got on at Doncaster, apologised for not having a ticket and handed over his card - £250!!