Can I book a call directly from the contact page?

No. There is no calendar widget or phone-capture field on this page. Principals submit a written request via the 'Request a Diagnostic Conversation' form; a senior advisor responds within two Brussels business days to schedule the €4,500 90-minute diagnostic.

Which office should I write to?

Write to the Brussels headquarters at office@sigridverbert.com for all substantive enquiries. The London address is the registered office only and is not staffed for walk-in correspondence.

How quickly will I hear back?

Every written enquiry is read by a senior advisor and acknowledged within two Brussels business days. Principals whose situations match the practice's scope are invited to the diagnostic; others are signposted to a more appropriate resource.

Is my enquiry confidential?

Yes. Correspondence is held under Belgian professional privilege norms, encrypted at rest, never added to a marketing list, and never shared outside the practice's seven-person team without the principal's written consent.

Correspondence · Brussels office

Letters to the office are read by a person, opened by the senior advisor on duty, and answered — or returned, with a note — within two Brussels working days. No CRM, no ticket, no auto-reply.

— Sigrid Verbert For the attention of the senior advisor on duty

The page below sets out the two addresses from which the practice operates, the single telephone and the single email through which principals may write, and the one action by which a ready principal begins the diagnostic conversation.

No. 02 — Places of correspondence

The two places the practice can be reached, written to, or visited by appointment.

London Registered office

Sigrid Verbert Advisory SRL
c/o Hackwood Secretaries Limited
One Silk Street
London EC2Y 8HQ
United Kingdom

For: Statutory correspondence, registered filings
Visits: By appointment only; no walk-in reception

Brussels Headquarters · operational office

Sigrid Verbert Advisory SRL
Avenue Louise 480
1050 Brussels
Belgium

Telephone: +32 2 555 0142
Email: [email protected]

Office hours · Brussels time (CET / CEST)

Monday — Thursday: 09:00 — 18:00
Friday: 09:00 — 15:00
Weekend · public holidays: Closed — correspondence held until the next working day

A senior advisor is on duty throughout published hours. Outside these hours, the mailbox is monitored for matters of urgency from existing principals only; new enquiries are acknowledged on the next working day.

No. 03 — How letters are handled

Written enquiries only, read by a person, answered or returned within two working days — never routed through a calendar booking tool.

There is no calendar widget on this page, no phone-capture form, and no chatbot. A principal who is ready to begin does so by writing a short letter of intent, in plain English, French, German, or Dutch, addressed to the Brussels office. The letter is opened by whichever senior advisor is on duty that week, read in full, and answered in the language in which it was written — usually within the same working day, and never later than the second.

Where the enquiry falls outside the practice's remit — typically a request for in-house legal representation, an operational turnaround mandate, or a coaching engagement below the principal threshold — the letter is returned with a brief note suggesting where the writer may be better served. No name is added to a marketing list. No enquiry is sold, shared, or aggregated.

What writing in triggers

Two working days, a named reply, and — if both parties agree — an invitation to the diagnostic conversation.

What writing in does not trigger

No sequence. No newsletter. No "checking in" emails six weeks later. No addition to a CRM record visible to anyone outside the senior advisor on duty.

No. 04 — The single action on this page

A principal who is ready to begin sends a written request that opens the €4,500 diagnostic conversation.

The diagnostic is a paid 90-minute engagement: a confidential first meeting, in person at the Brussels office or by encrypted video, in which Sigrid and the principal decide together whether the work warrants a longer retainer. It is not a complimentary discovery call, and it is not a sales conversation conducted by a junior team member. Submitting the form below opens a single, password-protected request screen; the senior advisor on duty will reply within two Brussels working days with a proposed time and the short pre-read.

Request a Diagnostic Conversation Entry point to the 90-minute paid diagnostic · €4,500 · not a complimentary call

Footnote · data and confidentiality

A short note on what correspondence does, and does not, become.

Correspondence received at the Brussels office is held under the professional secrecy norms applicable to Belgian advisory practice. Messages are encrypted at rest on servers located within the European Union; the mailbox is accessed only by the senior advisor on duty and, where strictly necessary, the head of client services. Letters are not retained beyond the period required to consider the enquiry, to deliver the diagnostic, and to satisfy the practice's record-keeping obligations under Belgian law.

A sender's name, organisation, or email address is never used to build a profile, is never shared with a third party, and is never added to a marketing list. If a working relationship does not begin, the enquiry is archived under the practice's standard seven-year retention and is then deleted without further action.

Sigrid Verbert Advisory SRL · Avenue Louise 480, 1050 Brussels