What are the implications of art.14 of the European Convention on Human Rights: the prohibition of discrimination?

Article 14 of the Convention provides that the enjoyment of the rights and freedoms it sets out "shall be secured without discrimination on any ground" and gives examples of potential grounds. UK legislation currently prohibits discrimination on grounds of sex, marital status, pregnancy and maternity, gender reassignment, race, colour, nationality, national or ethnic origins, age, disability, sexual orientation, religion or belief, and trade union membership or non-membership. Whether or not workers can use art.14 in aid of a contention that they have suffered unlawful discrimination remains to be seen.