Parents and Roman Catholic priests in the area have united to accuse the council, which is making cuts, of discrimination against people without religious faith.

It comes in stark contrast with controversy elsewhere in the UK where councils have scrapped subsidised travel to faith schools – worth around £500 a year per child – across the board.

In such cases councils have been accused of introducing a “tax on religion” and discriminating against people of faith.

But in Flintshire, the council proposes to single out parents who do not profess religious faith but want their child to benefit from education in a church school.

Under the proposal, due to come into force next year, children would have to produce a baptism certificate, a letter from a priest or other “suitable evidence of adherence to the faith of the school”.