See
these examples from HMRC.
Beekeeping seems to sit within example 1 and it will depend upon how one engages in the selling of their honey.
Yes ... but 'Income' is 'Profit' ... So you would only pay income tax on the actual nett profit ... ie: You can legitimately deduct all the cost of your enterprise - feeding, frames, consumables, travel, postage etc. etc, from your sales value and would only be responsible for paying tax on the 'Income'.
I doubt that there are many small operation beekeepers, who appear to fall into the 'commercial enterprise' category, that would actually make any significant profit once the real costs of their beekeeping are taken into account.
However, common sense would suggest that, if you feel that you are verging on the 'commercial enterprise' situation then you should start keeping personal records of both sales and costs - with supporting documents. If the IR feel that you are involved in an enterprise that is making profit and you are not declaring the income then you could find yourself on the receivng end of an IR inspection ... Believe me - you don't want to go there. If in doubt KEEP RECORDS.