There are various small animal auctions around, I don't know of any in Essex.
However, please be prepared to quaratine (strictly!) anything that comes from such a place as it's common for animals sold at auction to be in poor health and have contagious conditions such as ringworm. Ideally they should be quaratined away from your existing pets (Ringworm is spread by spores) on plastic so it can be properly discinfected.
I have had pigs from auctions before and sadly they are often in a very poor state. Ideally you should not buy from auctions - as it is putting money in the pockets of the people wanting rid of the animals, and usually it's 'regulars' selling every week. Occasionally there are poorly piggies that I just can't leave there, but it's not ideal to purchase them.
Are you intending to rehome or keep them? If you're going to keep them you'd be better off adopting some health checked piggies from rescue that are in need of a home.
Sophie
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