Juliette D'Souza persuaded 11 susceptible people to hand her £1 million to cure terminal illnesses and help disabilities.
The gang has been smashing down doors using scooters in part of north London.
The company responsible for staging the concerts was losing too much money.
Police are appealing for help in finding a man who has gone missing from hospital.
64-year-old Hassan Hashami was last seen on Wednesday morning at the Royal Free Hospital in Hampstead.
He is described as white, approx 6ft tall with blonde balding hair and was wearing a black Ralph Lauren Jacket, black trousers and black shoes.
Officers are concerned for his safety and wellbeing as he requires medication.
A Guardian investigation has uncovered that a third of the mansions on one of London's most expensive roads are standing empty, including several huge houses that have fallen into ruin after standing vacant for a quarter of a century.
The newspaper's investigation found that there are an estimated £350m worth of vacant properties in London's so-called London's "Billionaires Row", The Bishop's Avenue in Hampstead, North London.
The empty buildings include a row of 10 mansions worth £73m which have remained vacant unused they were bought in the 1990s reportedly on behalf of members of the Saudi royal family.
10 properties were put up for sale one of London's most exclusive, and expensive, streets by members of the Saudi Arabian royal family. The Evening Standard reports the huge homes in The Bishops Avenue in Hampstead were sold by an investment company for £80 million. Some have never been lived in.
Past residents on the street are though tot have included Bernie Ecclestone, Ringo Starr and Joan Collins.
An official report warned today that up to 1400 people in Hampstead could be at risk of being killed by flooding.
A inspector says the 300-year-old dams in place to protect Hamstead Heath's ponds from overflowing won't be enough to stop extreme floods.
The proposed plans are to build on the existing dam which Heath and Hampstead Society Chairman Tony Hillier says will produce an unacceptable impact on the visual and environmental state of the heath.
An official report warned today that up to 1,400 people in Hampstead could be at risk of being killed by flooding. A inspector says the 300 year old dams in place to protect Hampstead Heath's ponds from overflowing won't be enough to stop extreme floods.
Police are appealing for information after a body of a woman was discovered in the ladies' bathing ponds on Hampstead Heath yesterday afternoon.
The woman has been named as Sussie Ahlberg, 50, a photographer from Holborn. A post mortem is scheduled to take place at St Pancras Mortuary.
Detective Sergeant Trevor Plumb from Camden CID said: "Sussie's death is being treated as unexplained but we are keen to speak to anyone who may have seen her around the ladies' pond during Sunday 4 August.
"Sussie is five feet 10 inches tall, slim, greying hair, long legs, wearing a white 'Speedo' swimming hat, blue/transparent prescription swimming goggles, dark navy/black tankini".
Anyone who has any information or who was in the area at the time is asked to call police on 101.