Companies within Mayfair (north), Grosvenor Square

Newly Formed Companies in
Mayfair (north), Grosvenor Square
this week

There have been 14 companies formed in the week from 25-08-2026 to 01-09-2026 within the W1K postcode district (Mayfair (north), Grosvenor Square in West London). Usually over 2500 companies get formed every working day across the country. If you would prefer to analyse by region, rather than this postal district, you can check how many companies are formed in West London.

Centred on Mayfair (north) and Grosvenor Square, W1K is associated with Westminster and the communities, streets and local landmarks named in its coverage. Mayfair (north) and Grosvenor Square provide the main named reference points for W1K.

For W1K, the W postcode context matters: The W postcode gives the district a west London setting, with a mix of central commercial streets, residential squares, transport hubs and well-known cultural areas.

With 5,323 companies recorded as of June 2026, W1K sits in the upper reaches of the district ranking at 142nd out of 3,113. Company data for W1K brings together recent incorporations and newly formed companies associated with addresses in the district. The figures place W1K among the stronger-performing postcode districts in the UK for company registrations.

That local context helps make the company data easier to interpret, because W1K is tied to identifiable places rather than an abstract administrative code.

Below are just a small sample of the companies formed (with the numeric parts of the address redacted with an X and not showing the postcode, so we are not advertising peoples full addresses online) but allows you to see where some of the companies have been formed. Our newly formed companies wizard in our Dashboard allows you to filter by a range of options free of charge to get an idea of quantities, prior to deciding to purchase. We supply the full company details lodged when they filed their company when you have decided on your filter selection and choose to purchase.

Incorp Date	Categories	Location
28th Aug	Financial management	XX Grosvenor Street London
28th Aug	Financial management	XX Grosvenor Street London
28th Aug	Financial management	XX Grosvenor Street London
28th Aug	Financial management	XX Grosvenor Street London
28th Aug	Financial management	XX Grosvenor Street London
28th Aug	Other service activities n.e.c.	XX Brook's Mews Xrd Floor London
28th Aug	Financial management	XX Grosvenor Street London
28th Aug	Financial management	XX Grosvenor Street London
27th Aug	Financial management	XX Grosvenor Street London
27th Aug	Other service activities n.e.c.	XX Grosvenor Street London
26th Aug	Business and domestic software development Other information technology service activities Data processing, hosting and related activities Leasing of intellectual property and similar products, except copyright works	X South Molton Street International House London Mayfair
26th Aug	Other information technology service activities	XX Davies Street London
26th Aug	Other service activities n.e.c.	XX Brook's Mews Xrd Floor London
26th Aug	Management consultancy activities other than financial management	X Old Park Lane London