"Where you works, it sounds reasonable to 'discriminate' on religious grounds. However, at a guess, most workplaces are probably not founded on atheist and humanist principles with anti-theism is in their charter. "
you can get an exemption, but it's quite hard work, but any organization can in theory do it, but you need to prove a definite need to
from the European equality and human rights commission…..
"Where there is a Genuine Occupational Requirement (GOR) to employ a person of a particular race, ethnic or national origin, certain exceptions from the regulations are permitted covering selection, promotion and training, but the employer must be able to show that there is a genuine need taking account of the type of work, or the context in which the work is carried out.
Essentially, the same principles apply to religious discrimination, but in limited circumstances, exemptions from the Regulations may apply where an employer needs to employ a person of a particular religion. There is also an exemption for 'employers with an ethos based on a religion or belief'. This allows employers to place advertisements for jobs requiring a person to be of specific religion as long as it can be justified, which is difficult. The religious requirement must be crucial to the post. Exemptions also apply for acts done in the interest of national security. "
There's also some stuff about similiar philosophical ethos and discrimination
but I can't find it right now…..:)