Paragraph 15.3

The Licensee shall not be held to have failed to comply with an obligation imposed upon it by or under these Conditions if and to the extent that the Licensee is prevented from complying with that obligation by any physical, topographical or other natural obstacle, by the malfunction or failure of any apparatus or equipment owing to circumstances beyond the control of the Licensee, by the act of any national authority, local authority or international organisation or as the result of fire, flood, explosion, accident, emergency, riot or war.