You asked
I am interested in finding out when it is predicted that Muslims will be the majority in the UK.
We said
Thank you for your request about the number of Muslims in the UK.
We have no data about the birth rate among Muslims as information about religion is not collected at birth. We do publish Birth Summary Tables for England and Wales which include mother’s country of birth but this does not indicate the religion of the mother.
Data about religion from the 2011 census (the most recent) can be found here.
Although we do produce projections of the future size of the UK population, these do not include data about religion.