That would be me then...
Nope you need food hygiene rating, level 2 hygiene certificate and third party insurance. You simply cannot get onto a decent market or farmers market without these. Most insist on a minimum 4 star rating.
Or shall I put it this way...if you can get on a market without them checking you have these certificates that market should be closed down.
My other big gripe is the second sellers. Farmers markets should (and usually are) for the primary producers only.
I know of several concerns who buy their preserves and honey in and then pretend (lie) it's all made by them. Fortunately on the circuits we are on most of these are well known and cannot get onto any of the farmers markets.