You can’t sell eggs on a commercial scale unless you are a registered egg producer. That involves paperwork and government health checks. You CAN, however, sell them informally to friends, neighbours and passers-by as so-called ‘farm gate sales’.
If your flock has fewer than 350 birds, you can sell in this way without registering as an egg-producer. You cannot sell to shops or other resellers in this way, however - all eggs sold must be for the buyer’s personal use.
Chickens eggs for sale?
If selling via farm gate sales, you’re not allowed to use any of the official egg designations such as Free Range, Organic, Grade A, Small, Medium or Large. Just describe them as something like “Fresh eggs from our happy hens”, etc.
If you have more than 50 hens and want to sell eggs at market, you will need to be registered. You will need to conform to the market’s own regulations too.
Important note: Always check the local regulations before selling at a market. You are obliged to abide by their rules.
Check out the DEFRA website for more information, and for details of how to register your flock.