There is evidence that evangelical churches in London, Manchester, Birmingham and Glasgow are claiming to cure HIV through God.
We sent three undercover reporters into the Synagogue Church of All Nations (SCOAN), which is based in Southwark, south London.
All of them told the pastors that they were HIV positive. All were told that they could be healed.
Once a month the church has a prayer line, where people from across Europe come to be cured of all kinds of illness.
At registration they have to hand over a doctor's letter as evidence of their condition
They are filmed giving before and after testimonies, which are put on SCOAN's website.
The healing process involves the pastor shouting, over the person being healed, for the devil to come out of their body, and spraying water in their face.
One of the pastors, Rachel Holmes, told our reporter, Shatila, who is a genuine HIV sufferer, they had a 100% success rate.
"We have many people that contract HIV. All are healed."
She said if symptoms such as vomiting or diarrhoea persist, it is actually a sign of the virus leaving the body. Read More