Housing: Lighting

Schedule 1, paragraph 3 of the Welfare of Farmed Animals (England) Regulations 2000 (S.I. 2000 No. 1870) requires that:

Where animals are kept in a building adequate lighting (whether fixed or portable) shall be available to enable them to be thoroughly inspected at any time.
Schedule 1, paragraphs 14-16 state that:
Animals kept in buildings shall not be kept in permanent darkness.
Where the natural light available in a building is insufficient to meet the physiological and ethological needs of any animals being kept in it then appropriate artificial lighting shall be provided.
Animals kept in buildings shall not be kept without an appropriate period of rest from artificial lighting.

The law requires that fixed or portable lighting be available so that sheep kept in buildings can be thoroughly inspected at any time.
Throughout the hours of daylight, the level of indoor lighting, natural or artificial, should be such that all housed sheep can be seen clearly by the shepherd.