A kidnapped man was forced to flee his captors following a dramatic police chase in which police rammed the car he was travelling in.
The man was rescued by officers but fled after the unmarked police car crashed into the Chrysler people carrier on the A406 North Circular Road on Monday afternoon.
A 28-year-old south east Asian man was taken to hospital suffering minor injuries but was later discharged and arrested on suspicion of kidnap, false imprisonment, cultivation of cannabis and driving without a licence.
An hour later, armed police raided Warwick Road, Ealing in connection with the kidnapping and arrested a second south east Asian man.
The 24-year-old was arrested on kidnap charges and drug related offences after officers discovered a cannabis factory in the rented property.
One man who was working in the street said he saw people running. Then armed police stormed the house.
Nicholas Robinson, who has lived in the road for 20 years said it was a quiet residential street and he had never seen anything like this before.
The NHS worker said: "There were helicopters going overhead and loads of plain clothes officers going around.
"I thought there might have been a burglary but the police stayed all night, and this is unusual. "We don't expect armed police officers in a suburban street.
"We heard there was a cannabis fac-tory in the rented house and police were sitting outside and waiting and bringing bags out into a van.
"We have the odd burglary and car break-in but nothing like this."
Police are now searching for the kidnap victim, who ran from the scene of the smash close to the junction of Golders Green Road and the A406 after initial reports the car contained guns.
Undercover officers and detectives stationed cars and a lorry outside the house in Warwick Road until Wednesday and removed cannabis plants and other items for forensic investigation.
Two men, aged 24 and 28, appeared at Westminster Magistrates' Court charged with kidnap and drugs offences.
They will appear before Southwark Crown Court in November.
Inquiries are on-going and anyone with information is asked to call police on 0208 810 1212 or Crimestoppers anonymously 0800 555 111.