If they're having to build a tunnel specifically to accommodate double decker busses that are "just a bit too tall", it sounds like whoever procured the "Boris

If they're having to build a tunnel specifically to accommodate double decker busses that are "just a bit too tall", it sounds like whoever procured the "Boris busses" didn't do their homework, so now we're spending millions to fix something that could have been solved at no cost by buying slightly smaller busses?