London, Sept.1 : A female preacher has been secretly filmed spreading a hate-filled message of murder in Britain's most influential mosque.
Burkha-clad preacher Um Amira is reported to have told her Muslim audience how to deal with anyone who turns their back on Islam.
According to news of the world, she was quoted as saying: "He is Muslim and he gets out of Islam, he doesn't want any more. What are we going to do? We kill him - KILL, KILL, KILL!"
On adulterers, she says: "The judgment for the one who do this, what is the law?"
An audience member chips in: "Stone him."
Um Amira says: "Until he die. And the one who is not married?"
The other woman answers: "Lash him, lash him."
Um Amira responds: "Yes, with 100 lashes."
Her teaching is based on a hardline Saudi Arabian interpretation of Sharia law, totally rejected by mainstream British Muslims.
Saudi-trained Um Amira is also seen urging followers to slaughter homosexuals and lesbians during her rant at London's prestigious Regent's Park Mosque.
The Channel 4 investigation, to be screened in tomorrow night's Dispatches programme, includes sessions where preachers describe Britain as a "land of evil".
The programme sent an undercover woman reporter with a hidden camera into the mosque, which only last year promised to crack down on anyone promoting extremism on its premises.
When the reporter entered she was directed upstairs to a large balcony overlooking the main hall. Women are not allowed in the hall so hundreds - many teenagers and children - go to the area above to pray each day.
There they are given lessons by women like Um Amira, who says she has just finished three years of study at Saudi's Medinah mosque.
During her teaching she conceded her brutal punishments could only be carried out once Britain becomes an Islamic state.
Inter-faith groups, world leaders and school groups regularly visit the London mosque. The Regent's Park Mosque is home to the Islamic Cultural Centre, set up 60 years ago to represent all British Muslims. Its stated role is to help them integrate into society.