Yes I do believe there is quite a lot of hoops to jump through to sell meat, but I definitely don't intend to sell to the public - I don't mind giving some meat as a gift - but they often ask for specific cuts and they are willing to pay something, and I would rather they give me a contribution towards my costs to raise the animals than me just giving it away or having to say no.
I haven't done pigs for a few years now. I had a break from doing it. But last time I did some, I rang up some official but I can't remember if it was environmental health to register my kitchen (I used to childmind and had to do this anyway) or if it was Trading standards I rang. Anyway, When I asked about selling to friends and family, I was told so long as it went straight from the butchers to the person's house within a short space of time, (can't remember the time probably within the hour) then there wasn't any regulations as it hasn't actually come to my home. I haven't a clue if that is still the rule.
With regards to costing, I suppose the other option is that I form a pig club with friends and family, and they all contribute upfront towards the cost of the pigs, any equipment and food, slaughter costs etc... Then they all get an equal share - which they collect themselves from the butcher.
I can just see them running a mile at that suggestion.
Thanks for all the comments - its been helpful