Companies within Mayfair (north), Grosvenor Square

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

There have been 16 companies formed in the week from 04-08-2026 to 11-08-2026 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
11th Aug	Non-trading company	XX Grosvenor Street London
11th Aug	Event catering activities	International House X South Molton Street Mayfair London
11th Aug	Non-trading company	XX Grosvenor Street London
11th Aug	Educational support services	XX Park Lane London
10th Aug	Non-trading company	XX Grosvenor Street London
10th Aug	Other engineering activities	XX Gilbert Street London
7th Aug	Not available	XX Balderton Street London
7th Aug	Not available	Level X XX North Row London Greater London
7th Aug	Event catering activities Licensed clubs	X International House South Molton Street London
6th Aug	Activities of other holding companies n.e.c.	XXX Park Street London
6th Aug	Activities of venture and development capital companies	Level X XX North Row London Greater London
6th Aug	Dormant Company	XX Grosvenor Street London
5th Aug	Dormant Company	XX Grosvenor Street London
5th Aug	Dormant Company	XX Grosvenor Street London
5th Aug	Dormant Company	XX Grosvenor Street London
5th Aug	Other research and experimental development on natural sciences and engineering	International House X South Molton Street London