Projections to be published next month estimate that, if trends continue, the number of Roman Catholic worshippers at Sunday Mass will fall by 679,000 by 2020, The Daily Telegraph newspaper reported.
By that time, statisticians predict, the number of Muslims praying in mosques on Fridays will have increased to 683,000.
The figures from the charity "Christian Research" also suggest that over the same period the number of Muslims at mosques will overtake Church of England members at Sunday services.
Church spokesmen point out, however, that a growing number of Anglicans worship at other times of the week.
The projections show that if the Churches do not reverse their historical decline, there will be more active Muslims than Christians in Sunday services across Britain before the middle of this century.
The figures are based on British Government and academic sources and the latest edition of Christian Research's "Religious Trends." The Daily Telegraph added.
Last Mod: 25 Mart 2008, 18:08