BBC Dispatches is a documentary which shows undercover film recorded in British Salafi Wahabi mosques funded by Saudi Arabia and controlled by Saudi Wahabi trained clerics.
The mosques where hidden cameras were used by BBC reporters include:
Markazi Jamiat Ahl-e-Hadith
UK Islamic Mission (UKIM) - Linked to Pakistan's Jamaat e Islami
Regents Park Mosque (London Central Mosque and Islamic Cultural Centre in Regent's Park)
Green Lane Mosque, Birmingham
Ahl-e-Hadith mosque, in Derby
UKIM's Sparkbrook Islamic Centre, Birmingham
- Note that all of these mosques belong to the same Saudi Wahabi Salafi ideology which is a radical interpretation of Islam.