Sarwar is director of the Muslim Educational Trust (MET), which the Charity Commission for England and Wales describes as, "An educational charity devoted to the catering for the educational needs of Muslims and their children in the UK".[3]
Ed Husain writes that when he was a juvenile, Sarwar's Islam: Beliefs and Teachings was used in religious education classes in Britain, and that as of 2007 it continued to be used as an introductory text in schools, mosques and Muslim homes there.[4]
His other written works include:
Islam for Younger People. (1981) Muslim Educational Trust. ISBN090726140X
The Children’s Book of Salah. Muslim Educational Trust. ISBN0907261094
British Muslims and Schools. Muslim Educational Trust. ISBN0907261434
Sex Education: The Muslim Perspective. Muslim Educational Trust. ISBN0907261418
Syllabus and Guidelines for Islamic Teaching. Muslim Educational Trust. ISBN0907261078
Muslims and Education in the UK. Muslim Educational Trust. ISBN0907261434