Police are warning residents of Barnhill to be on the lookout for a con artist who is posing as a Brent Council official to obtain personal details.
In the past few weeks there have been two incidents where a woman has been knocking on doors claiming to work for the local authority's street care department, and asking for people's bank details and their dates of birth.
The fraudster, who is black and in her thirties, has no ID, and has threatened residents who refuse to give the information with a court summons for the following week.
This has then been followed up by two separate phone calls asking for the same details and mentioning the previous enquires, and threatening a court appearance.
There has been an incident where credit cards were successfully applied for by using the details fraudulently obtained.
PCSO Wiggs, from the Barnhill Safer Neighbourhoods Team, said: "We urge residents to be vigilant when answering the door to people they don't know.
"Ask the caller for proof of identity. Genuine callers should carry an identification card with their photograph on it. If unsure, telephone the company the caller says they are from.
"Never give your personal details to a stranger at your door."
Anyone with information should contact their Safer Neighbourhoods Team on 020 7372 1212, or visit www.met.police.uk/saferneighbourhoods .