Meanwhile, the leader of the Catholic Church in Scotland, Cardinal Keith O'Brien, meanwhile, has used his Easter message later to attack "aggressive secularism".

BBC: Seek happiness, not prosperity, archbishop urges

Meanwhile, Prime Minister David Cameron issued an Easter message in which he praised the "incredible role to the benefit of our society" of faith institutions.

BBC: Archbishop warns against 'hero leader culture'

In his Easter message, Cardinal O'Brien is expected to refer to remarks made by Pope Benedict XVI in 2010 that Christians "need to be free to act in accordance with their own principles".

BBC: Scotland