Article 4 Definition of a supplier
A licence-holder is a supplier where the licence-holder supplies, or for a group company, the group supplies, more than—
250,000 domestic customers on 31st December of any relevant year; and
a qualifying supply in the year ending on that date.
For the purposes of paragraph (1), where a licence-holder (“L”) is a member of a group (“G”), the supplies made by G are to be determined by reference to the type of supply in respect of which L is a licence-holder.
A new supplier is a supplier to whom paragraph (1) applies for the first time on 31st December 2012 or 31st December 2013.
For the purposes of determining the number of domestic customers of a licence-holder under this Order, a domestic customer who receives electricity and gas from a dual licence-holder is a separate domestic customer under each licence.
Where a dual licence-holder satisfies paragraph (1) in respect of electricity or gas that licence-holder is a separate supplier in respect of each supply.