FYI guys
It appears that the government have introduced an age limit of 10 years on the tyres on minibuses (9 or more passenger seats) and anything with a gross weight over 3500kg.
If you have a twin wheel rear axle it only affects the front axle, if you have a single wheel axle all tyres must be less than 10 years old.
Info here
https://mattersoftesting.blog.gov.uk/ba ... d-coaches/
and
https://www.gov.uk/government/news/gove ... uly%202020).
So - might be a good idea to learn how to read tyre date codes and work out how old your tyres are!