"organic" is like many words, it can, in fact be many things, not least a bit of a moveable feast........
I'd agree that common sense dictates that it would be pretty much impossible to guarantee true organic honey in the UK (thanks to the tosser with a can of Provado in their garden), but you must question the precise meaning of the term
- as has been already mentioned, there is the gospel according to the Soil Association - taking it to extremes, some "organic" certification boards in the US have laughably poor standards that bear little resemblance to the far stricter European ones.
Believe it or not, manufacturers are allowed to label things as "natural" which are chemically synthesised (as long as it's a copy of a genuinely natural substance........) - it's nearly ALL semantics of one sort or another.
If "being organic" matters to you, meaning "as free as I can get it from chemicals" (which is what I try to achieve,) then you've done all you can- even if it were allowed to label it "organic" I feel it would be dishonest.
There's nothing to stop you being honest - if I were marketing my own honey I'd do so something along the following lines - "Raw natural honey, unfiltered, unpasteurised, unprocessed in any way - no pesticides or antibiotics used - from naturally-drawn honeycomb"........... it's honest, it tells the punter what they're getting, and as I understand the rules, completely legal!