Is Britain Becoming a Muslim-Majority Country?

No. According to the 2021 Census (England & Wales):

• Christianity: 46.2% (27.5M) — still largest, but first time <50%
• No religion: 37.2% (22.2M) — fastest growing
• Islam: 6.5% (3.9M) — second-largest religion
• Other religions: Hindu (1.7%), Sikh (0.9%), Jewish (0.5%), Buddhist (0.5%)

Scotland and Northern Ireland show similar patterns. While Islam is the fastest-growing major religion (due to immigration, younger demographics, conversion), projections show Muslims reaching ~10-15% by 2050—nowhere near a majority.

Britain remains a secular, pluralistic democracy with an established church (Church of England) but no religious test for citizenship or office.