3.—(1) Anything which would (apart from these Regulations) be more than one hereditament shall be treated as one hereditament if it is –
(a)occupied by or, if unoccupied, owned by Phoenix Natural Gas Limited;
(b)occupied by pressure reduction stations or by pressure reduction units, high and low pressure pipelines, meters or any other premises or equipment used for the conveyance of gas from one place to another or for a purpose connected with or ancillary to that purpose.
(2) Paragraph (1) does not include any pipes (other than mains), taps, cocks, valves or other similar apparatus (other than any meters) used in any particular place in connection with the use of gas, in that place.