W1S
Postcode districtPostcode district covering Mayfair and St James's, in Westminster.
Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an W1S postcode. How census figures are added up
Gigabit coverage by postcode district
Connected Nations (Ofcom) · January 2026
In W1S, 94.7% of homes and businesses could get gigabit-capable broadband in January 2026.
How W1S compares
Each dot is a postcode district. The black line marks the middle one.
Is W1S safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in W1S at a rate of 5,855.8 per 1,000 people.
That compares with 204.6 per 1,000 people across W.
In August 2026 alone, 42 cases of crime and anti-social behaviour were recorded in W1S.
In the 12 months to August 2026, the most common types were shoplifting (133), other crime (130) and theft from the person (123).
A year earlier, the recorded crime rate in W1S was 10,980.8 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.
Your MP
- Rachel BlakeLabour (Co-op)MP for Cities of London and Westminster
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Postcode sectors in W1S4
Council1
Postcode districts next to W1S4
Nearest rail stations4
More in the W postcode area2
W1S in brief
W1S is a postcode district covering Mayfair and St James's, in Westminster.
About 104 people lived in W1S in mid-2024 (worked out by Open Index from ONS small-area estimates); police recorded crimes and anti-social behaviour at a rate of 5,855.8 per 1,000 people in the 12 months to August 2026 (police.uk).
W1S had 100 usual residents at the census.
In W1S, 94.7% of homes and businesses could get gigabit-capable broadband in January 2026.
83.2% of residents in W1S were aged 15 to 64 at the census.
12.9% of residents in W1S were aged 65 or over at the census.