What the law will do is to ask people to consider making religious services accessible to disabled people as a matter of course - it is not a cast iron rule that every church, mosque, synagogueor temple has to have a wheelchair ramp.
Prime Minister David Cameron said last week that he believed same-sex marriages should be allowed in churches - but only if there was a "100%" guarantee that no church, synagogueormosque would be forced to hold one against their wishes.
If, on the other hand, it is closer to your core functions as a synagogueor a mosqueor a church, then there may be more leeway for you to hire somebody who is a believer of that particular religious faith.