3U.K.For the purpose of this Article the term “forced or compulsory labour” shall not include:
(a)any work required to be done in the ordinary course of detention imposed according to the provisions of Article 5 of this Convention or during conditional release from such detention;
(b)any service of a military character or, in case of conscientious objectors in countries where they are recognised, service exacted instead of compulsory military service;
(c)any service exacted in case of an emergency or calamity threatening the life or well-being of the community;
(d)any work or service which forms part of normal civic obligations.