Dave: It's probably OK if there's a doctor's prescription. When I asked a pharmacist for it, I was told that a prescription was required for Canesten, and for any alternative anti-fungal creams, for anyone over 60. When I messaged my doctor about my problem though, he actually prescribed a different product. Other pharmacies have told me the same thing and that it's the reason why Canesten is now no longer freely available on most supermarket shelves.
This subject has come up her several time before, with input from people who work in pharmacies suggesting that the ban has come about because some women over 60 were using the product to treat what they thought was thrush when, in fact, they'd got vaginal cancer. So it was decided that it was best to try to ensure that anyone with symptoms in that area was forced to consult a doctor, rather than being allowed to self-prescribe. (Yes, I know that doesn't really explain why men over 60 can't have it. I'm only repeating what's been stated here, and on other web forums, in the past!)
It's also been mentioned before that some stores (such as Superdrug) seem to be unaware of the restriction on sales of the product!