you need a food hygiene certificate (can do the course on-line and not expensive)
trading standards also need to be contacted and the council do a food hygeine check.
need 2 sinks in the kitchen (or if you have a utility room then that will be ok)
if you have pets -they will moan even washing machine in the kitchen is frowned upon!!
trading standards will advise about food labelling etc and rules on weights.
saying that they can be helpful just depending on who you speak to.
one wanted us to send some samples of chutney (which is considered low risk!) to be annalysed in some microscopy factory to decide on shelf-life!!!
hope that helps
oh yes.... public liability in case you poison anybody
Mx