[3] It is the European headquarters of the Tablighi Jamaat movement,[4][5][6] and also houses one of the two main Islamic seminaries in the UK.

Daily services consist of prayers, talks and public lectures, and the organisation of ten person groups (jamaats) who undertake proselytising trips.

[14][15] Both the allegation of extremism and specific claims that Sidique Khan or Tanweer visited the mosque are denied by its leaders.

[16][17][18] In 2006 the Institute of Islamic Education was criticised by Ofsted for an "over-emphasis" on religious study to the neglect of the secular curriculum,[8] leading to poor exam performance.

[21] The Times journalist Andrew Norfolk has argued the school contributes to ethnic segregation in the local area.