On Tue, 12 Feb 2019 14:18:46 +0000, John Williamson wrote:
Most
commercial vehicles going into the London ULEZ have been at the
appropriate Euro level for a long time now, and nobody seems to be
celebrating yet.

What people will notice is that it will cost more to deliver goods and
people to London, so Londoners will pay more for their groceries, and
there will be fewer tourists, leading to problems for the many
businesses that depend on them.

If most commercial vehicles don't need changing then delivery costs will
mostly stay the same and prices will mostly not increase (or if they do
it will not be a significant increase).