Coat your chickens comb and wattles in Vaseline during the winter, to prevent frost bite.
By law you are required to register with DEFRA if you are responsible for or own poultry of 50 or more birds. Although not yet required by Law, 50 birds or less, you are not obliged to register with DEFRA but keepers are encouraged to do so of their own accord.
When selling your eggs on, at the "farmgate" for example, your eggs must be clean, but not washed. Damaged or cracked shells should be kept for your own use, rather than sold on and used as quickly as possible.
You must display a Best Before Date, to comply with the Law. Eggs are usually expected to last up to approximately 4 weeks from the date of lay.