A 'Happy Forecast' has found Fulham and Parson's Green to have the happiest communities in the capital.
A study of all London's 119 postcodes found these areas have the best social wellbeing, while Tooting, Whitechapel and Walworth had the worst.
The project has been translated into an interactive 3D map of London, visualising over 700 man hours of observational research across all 119 post codes.
'Most Happy' areas include:
- SW6 - Fulham, Parson's Green
- SE19 - Upper Norwood, Crystal Palace, Norwood New Town
- SE21 - Dulwich Village, West Dulwich
- SW13 - Barnes, Castelnau
- SE22 - East Dulwich
'Least Happy' areas include:
- SW17 - Tooting
- E1 - Aldgate, Whitechapel, Mile End
- SW8 - Nine Elms, Vauxhall, South Lambeth
- WC1 - Bloomsbury, Gray's Inn
- SE17 - Walworth, Elephant and Castle
Jenny Edwards from the Mental Health Foundation says people who are feeling anxious need to seek help early.
The survey also revealed that Londoners were the least likely to go to their GP for anxiety problems. Just 22% said they would be likely to seek help for the condition.
A quarter of Londoners added that they thought feeling anxious was a sign of not being able to cope and the same amount of people said they would be embarrassed to tell someone they had anxieties. But only 9% said they thought it was something to be ashamed of.
1 in 5 Londoners feel anxious a lot of the time while more than 40% feel anxious at least once a week.
Personal relationships cause anxiety for 27% of those in the capital, money worries are the main concern for 43% and welfare of loved ones causes anxiety for around a third.
The revelations come from a survey by the Mental Health Foundation for Mental Health Awareness week.
Plans to base mental health teams in police stations and courts in north east London will help cut reoffending and reduce health inequalities, a doctor for NHS England said.
Dr Alison Frater, Head of Public Health and Health in the Justice System at NHS England in London, said:
Ten boroughs across north east London are the focus of a new mental health initiative by the Metropolitan Police.
- Barking and Dagenham
- Tower Hamlets
Mental health teams will be placed in police stations and courts across north east London under a new pilot scheme designed to cut reoffending.
Police said the initiative will reach more than 2.5 million people at seven courts and 13 custody suites and would ensure vulnerable adults and young people can be assessed at an early stage.
Evidence shows that a third of young people who have committed offences have mental health needs, and a fifth have a learning disability.
Officers said they hoped the scheme would enable people to get the help they need as well as reducing the burden on police and the courts.
Mental health nurses will be posted at police stations across London from next month.
It is part of a pilot scheme to help forces assess vulnerable people and if necessary refer them for appropriate treatment.
If successful, the programme is expected to be rolled out across the country by 2017.
Policing Minister Damian Green said: "When someone is suffering a mental health crisis, the police are often the first to arrive on the scene.
"While the police cannot and should not provide the necessary medical support and treatment, they need to be able to recognise mental health issues and deal with them appropriately.
"The police also need their health partners to be ready to step in and provide medical support for people in crisis."
A man who had gone missing from a secure mental health unit has been found by police, Scotland Yard has said.
Marvin Walters, 28, has been returned to hospital.
He was reported missing from the unit in Lewisham, south east London, yesterday and police warned he was considered a risk to the public.