Since 4 March 2024 a company’s registered office has had to be what Companies House calls an appropriate address, meaning one where a document sent to it can be expected to come to the attention of a person acting for the company. PO Boxes stopped qualifying on the same day.

The enforcement is the part most people miss. Where Companies House decides an address is not appropriate, it can replace it with a default Companies House address. The company then has 28 days to evidence a link to a proper one, and failing that, the registrar begins the process of striking it off.

That is the real question behind a Mayfair virtual office, and it is not the postcode. It is whether anyone is actually in the building to receive what arrives. A W1 address on a letterhead is a positioning decision; a W1 address on the register is a compliance one, and the two are sold at similar prices by operators offering very different things.

Published entry packages here run from £100 to £160 a month, and two of the four operators quote on enquiry rather than publishing at all. The gap is mostly about who signs for the post, whether a phone is answered, and whether registered office use is included or charged as an extra. Here is what this comparison looks at:

  • What each package includes, and what sits behind a separate charge
  • Whether the address is offered for Companies House registered office use
  • The building itself, and whether it is staffed
  • Pricing, Google ratings and review themes, and whether the operator is trading

4 Best Virtual Offices in Mayfair

1. Argyll: 84 Brook Street


84 Brook Street is a Grade II listed building behind a red brick and ironwork façade, a few minutes from Bond Street, and Argyll runs it as a working office rather than a mail room: private offices, two meeting rooms, a video booth for private calls and a business lounge with a communal kitchen. Its virtual office covers the Mayfair address with mail forwarded weekly or scanned daily, plus lounge and meeting room access at member rates. Registered office use and call answering are both priced separately, which is the detail that changes the arithmetic.

Best for: Businesses that want a Mayfair address in a period building and expect to turn up and use the lounge rather than only receive post.

Standout features

  • Grade II listed building on Brook Street, minutes from Bond Street
  • Business lounge, two meeting rooms and a video booth on site
  • Mail forwarded weekly or scanned daily, your choice


Considerations

  • Companies House registered office use is a separate £40 a month, so an address bought specifically to sit on the register costs £140 rather than £100.
  • Call answering starts at a further £100 a month, so a business wanting the phone covered pays roughly twice the headline figure.
Google rating: 5.0 from 4 reviews
The review base for this building is small, so the rating rests on limited evidence. Argyll’s other Mayfair buildings rate between 4.8 and 5.0 on larger samples.

A reviewer keeps it brief:

“The team are very friendly and helpful.” Argyll Client, Google review, 2025

Price: From £100/month

Contact: +44 20 3008 8888

Learn more: Argyll virtual office Mayfair

2. Servcorp: One Mayfair Place

Level 1 of One Mayfair Place sits on the Piccadilly corner of Mayfair Place, two minutes from Green Park. It is a staffed business floor rather than a mail room, so post is signed for by a person and visitors are received at a desk, which is the practical form the appropriate address test takes. The packages step up rather than bundle: the

Address Package covers the business address, mail handling and an hour a day of coworking access across the international network, and The Virtual Office adds a London number with receptionists answering live in your company name.

Best for: Businesses whose clients and bankers look up the address, and anyone who would rather a person answered the phone than a service logged the call.

Standout features

  • Level 1, One Mayfair Place, on the Piccadilly corner two minutes from Green Park
  • Staffed reception, unbranded, with mail signed for in person
  • Receptionists answering live in your company name on the higher tier

Considerations

  • Company registration is not covered by the Address Package, so a business buying an address to put on the Companies House register should contact Servcorp before committing.
  • The entry package is the dearest of the four, and a business that only needs somewhere for post to land will be paying for a staffed floor it is unlikely to visit.
Google rating: 4.5 from 50 reviews, of which 42 are five star
Reviewers most often mention the reception team (10 mentions), helpful staff (10) and the welcoming atmosphere (7).

A reviewer describes using the floor for client work:

“The quality of space and facilities were excellent. We were very happy to hold client meetings as the environment was very good.” Servcorp Client, Google review

Price: From £160/month

Contact: +44 20 3205 7200

Learn more: Servcorp One Mayfair Place

3. Our Space: 27 Hill Street

Our Space occupies a Georgian building at 27 Hill Street, between Berkeley Square and Green Park, and runs it as a serviced office rather than a mail room. The virtual office is a single package at a fraction of what the others charge, covering the W1J address with mail forwarded weekly or scanned daily, plus meeting rooms in the Mayfair boardrooms at member rates. Terms are month-to-month.

Best for: Early-stage businesses that want a genuine Mayfair address on a budget and handle their own calls and post

Standout features

  • 27 Hill Street, a Georgian building between Berkeley Square and Green Park
  • The lowest entry price here by a wide margin
  • Month-to-month terms, with meeting rooms bookable in the same building

Considerations

  • The operator’s main virtual office page lists tiered packages against its Holborn address rather than Hill Street, while a separate page markets a Mayfair virtual office, so confirm which address and which tier you are actually buying.
  • Nothing on either page states whether the address is offered for Companies House registered office use, so confirm that directly if the register is the reason you are buying.
  • The rating rests on four reviews, the smallest sample here by some distance, so there is very little evidence from which to judge how it performs day to day.
Google rating: 5.0 from 4 reviews
The review base is small, so the rating rests on limited evidence and no aggregated themes are available.

A reviewer picks out the rooms:

“Beautiful office spaces for meetings!” Our Space Client, Google review, June 2026

Price: Contact for details
The operator’s published figures differ between its Mayfair page and its main virtual office page, so the rate for this address is best confirmed directly

Contact: +44 20 7290 9552

Learn more: Our Space virtual office Mayfair

4. Signature by Regus: Berkeley Square

Signature is the premium tier of IWG’s network, and its Berkeley Square address sits at the centre of Mayfair among the hedge funds and family offices that give the square its reputation. The virtual office is sold in tiers covering the address, mail handling, call answering and meeting room credits, with coworking access on the higher plans, and the same account reaches Signature and Regus buildings in other cities.

Best for: Businesses that want a Berkeley Square address and expect to use workspace in other cities on the same account.

Standout features

  • Berkeley Square address at the centre of Mayfair
  • Call answering and meeting room credits available within the virtual office tiers
  • Addresses in other UK cities and internationally on one account

Considerations

  • No standard rate is published, so it cannot be compared on cost against the three above without enquiring first.
  • At 3.6, this is the lowest-rated entry here, on a sample large enough to be meaningful, and the review themes are markedly less consistent than the others.
Google rating: 3.6 from 56 reviews, drawn from a moderate sample

A reviewer is direct about the balance:

“The front desk staff were genuinely helpful. Regrettably, this is the sole positive I can offer.” Signature by Regus Client, Google review

Price: Contact for details

Contact: Enquiries via the Regus website

Learn more: Signature by Regus Berkeley Square

Quick comparison

ProviderAddressFrom (per month)Registered officeCall answeringGoogle rating
Argyll84 Brook StreetFrom £100From £40 extraFrom £100 extra5.0 (4)
ServcorpOne Mayfair PlaceFrom £160Contact ServcorpLive, from £306.404.5 (50)
Signature by RegusBerkeley SquareContact for detailsAvailable in tiersAvailable in tiers3.6 (56)
Our Space27 Hill StreetContact for detailsNot statedNot offered5.0 (4)

Entry-level monthly membership shown. Two of the four operators quote per enquiry rather than publishing a standard rate, which is common at this end of the Mayfair market. Tiers differ in what they include, so compare the tier rather than the headline figure alone. Standard rates only, excluding promotional and introductory offers.

Choosing the right virtual office in Mayfair

Start with the register. If the address is going on Companies House, ask the operator directly whether it is offered for registered office use and what it costs, because two of the four here treat it as a separate line rather than part of the package. Then ask the question the rule actually turns on: is there a person in that building during working hours who will receive what arrives? A staffed reception answers it; a forwarding arrangement may not.

Then work out whether anyone will call. This is the single largest cost difference between these packages and the one most often bought and then left unused. If your clients email, the cheapest address serves as well as the dearest. If your phone is your front door, the gap between an answering service and a receptionist using your company name is most of the price range on this page.

Think about what the address is doing for you, too. Mayfair is bought for what it signals, and a Georgian building on Hill Street, a listed red brick house on Brook Street and a corporate floor on Piccadilly signal different things to different clients. None is better; they are not interchangeable either.

Finally, confirm the operator is trading at that address. Workspace listings outlive the businesses they describe, and an address that fails the appropriate address test is not an inconvenience: Companies House can replace it, give you 28 days to fix it, and begin striking the company off if you do not. A call to the number on the operator’s own site settles it in a minute