The differences lie in refinements and efficiencies, mostly through simplifications and economies of sale...but the basis are just the same.
The biggest change is when you realise just how much of conventional beekeeping at a small scale is quite unnecessary, causes a lot of hive disturbance and risk to the queen with far too much intervention.
Good words.
Part of the problem is that inefficient beekeeping is taught by rote and has been forever; look at a beekeeping magazine say, from the 1950s, and you will see that not much ever, ever changes. From that perspective, any intervention by a beefarmer or a thermodynamist to shake up ideas is easily worth its weight. Must remember, though, that a beefarmer has a thousand more opportunities (and the
intent) to learn than the amateur, and the thermodynamist has the
intent (and the opportunity) to think clearly and analyse in depth.
Honey yields, Nigel? I wouldn't set much store by the BBKA figures; I reckon the surveys are filled in by well-intentioned novices. I recall a dismal year when Londoners only averaged 8lb/colony. Fair to say that even an average amateur would have to work hard to get that low; thing is, that year I wasn't much more than a novice and still managed to get to about 50lb/colony, and got that with the usual mix of chasing mistakes and hoping for success.
Derek's point that
"natural beekeeping" and UK bee farming are based on similar observations yet driving different beekeeping practice is intriguing: I work for a bee farmer who operates colonies in much the way a Warré is run: a floor, a set of boxes of equal size, a roof. The lack of niceties such as dummy boards, QXs and crownboards gives a simple system (driven partly, it must be admitted, for reasons of economy). On top of that, we operate a very lean system if we can get away without losing too much by spending too little. Some only had four inspections all season; not quite Warré economy of interference, but not bad, and the yield was good.
Cross-fertilization of ideas ought to be the norm: after giving a Warré demo. to our BKA National amateurs, the local natural man now wants to come out this year and see how we work our commercial system. Similarities, rather than differences, indeed.