I handed my allotment back during covid, the " allotment enforcement officer " went to our site and said the grass on my paths were more than 15mm high this was during the 1st lockdown and I Felt driving to the allotment wasn't a " essential journey " but his reply was it was fine under my " exercise outing " , after a discussion on it, I told him to stick it

the funny thing is, our site has 120 allotments and I bet under 1/2 are ever used and really overgrown, yet my grass paths were over 15mm