4.—(1) Article 8 (review of obligations by the Authority) is amended as follows.
(2) For paragraph (5) substitute—
“(5) The number of domestic customers under paragraph (3)(b) on each 31st December subsequent to the commencement of the obligation period, or under paragraph (4)(c), is deemed to be zero where—
(a)in respect of any 31st December other than 31st December 2011—
(i)a supplier belongs to a group of companies and that group has fewer than 50,000 domestic customers on that date; or
(ii)for any other supplier, that supplier has fewer than 50,000 domestic customers on that date;
(b)in respect of 31st December 2011—
(i)a supplier belongs to a group of companies and that group has fewer than 250,000 domestic customers on that date; or
(ii)for any other supplier, that supplier has fewer than 250,000 domestic customers on that date.”.