Paragraph 10
Any organisation—
(a)
established by public utility undertakers for the purpose of carrying out, in the event of damage being caused by enemy action to any part of their undertaking, such temporary or emergency measures as might be necessary to protect persons or property from danger resulting from that damage; and
(b)
maintained by those undertakers for that purpose or for the purpose of assisting any other organisation described in this paragraph to carry out the purpose of that other organisation.