As I understand it, as a minimum you need:
1. Honey (specify type where appropriate based on honey labelling regs, I think 2015)
2. Address to contact/find you. I'm currently trying to find out if an email address is OK rather than my home address but I doubt it.
3. Weight of honey in container
4. Best before date (can give up to 5 years I think)
5. Lot number
6. Country of origin
Writing must be a minimum of 1mm high IIRC.
If selling direct to consumer it's a little less stringent with the option to display some of that information at point of sale. TBH I'd still just play it safe.
Honey labelling regs:
https://www.legislation.gov.uk/uksi/2015/1348/made
Also worth looking at general food labelling regs:
https://www.legislation.gov.uk/uksi/2020/541/made
https://www.legislation.gov.uk/uksi/1996/1499/contents/made
Thorne advice sheet (link typed manually as phone playing up so may be incorrectly if it doesn't work):
Www.Thorne.co.uk/image/data/Documents/UK%20Honey%20Labelling%20Regulations.pdf