Regulation 4 Prescribed circumstancesI1

the death or serious illness of the claimant or a spouse or dependant of the claimant;

the disruption of normal postal services;

failure on the part of the Secretary of State to notify the claimant of the decision; or

exceptional circumstances applying to the claimant which rendered it impracticable for the claimant to bring the appeal or to instruct another person to bring it;