Glossary of Terms Used in the Sunday Trading Act 1994
shop means any premises where there is carried on a trade or business consisting wholly or mainly of the sale of goods (see Schedule 1, paragraph 1 to the 1994 Act)
a large shop is a shop which has a relevant floor area exceeding 280 square metres (see Schedule 1, paragraph 1 to the 1994 Act)
relevant floor area in relation to a shop means the internal floor area of so much of the shop as consists of or is comprised in a building, but excluding any part of the shop, which throughout the [period of seven days ending with the Christmas Day in question], is used neither for the serving of customers in connection with the sale of goods nor for the display of goods (see Schedule 1, paragraph 1 to the 1994 Act)
The words in square brackets above are inserted into the definition in the 1994 Act (in place of a reference to Sunday) by section 1(5) of this Act insofar as the definition applies to the meaning of "large shop" in this Act.