“As a result, there were many people who did not benefit from the growing wealth of the country. And of course, the very fact that trickle-down didn’t happen to the extent we hoped is one of the many reasons that led to such a disenchantment with government and, in my view, to the Brexit vote.”
John Major says they hoped trickle-down would work but there was plenty of evidence that it wouldn't. People talked about it not working in the Great Depression, even.
https://inews.co.uk/news/politics/ex-pms-admit-regional-inequality-brexit-2704593
