Catholic parishes will swell by hundreds of thousands over the next few years after managing years of decline, according to a new report, as both legal and illegal migrants enter the country.

It says that the influx of migrants could be the Catholic community’s “greatest threat” or its “greatest opportunity”.

While in some places the Catholic Church has responded positively, in others it has been “overwhelmed” by the scale of the challenge. The growth of Catholicism in Britain comes as the established Church of England and the Anglican provinces in Scotland, Wales and Ireland face continuing, if slow, decline. ...