Hi
Have you thought about contacting a local college / university campus that offers agricultural courses and discussing the possibility of placing your hives on their land? It may sound daft, but it isn't as silly as it might sound. Disabled access shouldn't be a problem and other than possibly doing an enhanced CRB check, if they agreed, you could be good to go pretty soon. Yes, there would have to be a risk assessment, BUT choosing a college / university that offers agricultural courses is far more likely to be receptive. You may have to negotiate something in return, or at least sell it to them on a PR basis (saving the bees or helping locals, or even intro to bees session for their students), but you may get some interest. You may even find a lecturer who works there is also a beekeeper who might support your request.
I have my bees in the countryside. Some houses nearby, but they are very much country people...and see bees as part of their environment. I suspect managers of agricultural courses will be of a similar mindset.
Just something to think about
Hope all turns out well
Sally
Additional comment...OK, now read previous posts properly, and you can ignore my post, unless things don't work out for you (though hope it does)