I used to get WOT on my BSA single, through the Amal mono-bloc being very sensitive when bolting back onto the cylinder head. I used to road test the bike on a 3- lane road called Euxton Lane, downhill one bend sweeping to the left and the dead straight, everyone used to test their top speeds on this road in the locality.
Got a shock some years ago when I returned to find that the said road had not just the round-about for the New village, but now traffic lights and a 40mph restriction on it, the Royal Ordnance factory is all but gone, where my Dad's Father, Mother & Brother worked and guess what its now a huge housing complex, where you are not allowed to grow vegetables in the gardens!
Speed cameras everywhere and inane speed restrictions which would make the most modest of us a law breaker & speed criminal. No chance of WOT any more.
Oh! I always thought POM referred to the red-colour Brits went on the beaches in Australia, a comedian once said Australians were the most balanced people in the World, they have a chip on each shoulder! As we do not like Poms they do not like being referred to as Colonials, having said that you could be deported for stealing a loaf of bread, in the old days,