Hartree Partners Advisory Services U.K. Limited

Reference number: 207789

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Authorisation being cancelled

This firm has asked the FCA to cancel its authorisation. It is still in force until the FCA processes the application, so existing business keeps its protection, but its regulated work is winding down.

Website, phone number and address

Compare these against whatever you were given. Scammers clone real firm names and reference numbers but use their own phone number and website, so a detail that does not match the register is the clearest warning sign there is.

In the full report: 3 background checks

  • When hartreepartners.com first appeared online, and whether it can receive email
  • What kind of line 020 7201 7134 is
  • Who else gives the postcode SW1W 9SH
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Other names (2)

If you were contacted under any of these names, it is this firm.

  • Hess Energy Company (UK) Limited Former name
  • HETCO Advisory Services U.K. Limited Former name

FCA permissions and consumer protection

  • Give regulated advice FSCS may apply
    A claim for unsuitable advice is itself FSCS-protected, up to the limit that applies to the product you were advised on.
  • Manage or trade investments FSCS may apply
    Eligible investment and pension claims are typically FSCS-protected up to £85,000 per person, depending on the product and your circumstances.
  • Complaints Ombudsman, free
    You can refer a complaint about this firm to the Financial Ombudsman Service for free, whichever activity it relates to.
Show FCA detail (5 permissions)
  • Advising on investments (except on Pension Transfers and Pension Opt Outs)
  • Advising on P2P agreements
  • Arranging (bringing about) deals in investments
  • Dealing in investments as agent
  • Making arrangements with a view to transactions in investments

Limits on what they may do

  • Energy Market Participant
    The firm must not conduct designated investment business other than energy market activity.

FCA disciplinary action and complaints

No FCA disciplinary action.

The Financial Ombudsman Service only publishes complaint figures for firms with 30 or more new complaints in six months, so there are none here for this firm.

Companies House record

The company behind the firm: its status, age, registered office and directors.

Company number
04308190
Company status
Active
Company type
Private limited company
Incorporated
19 October 2001 (25 years old)
Registered office
Level 8 123 Buckingham Palace Road, London, SW1W 9SH, England
Nature of business
  • Other professional, scientific and technical activities not elsewhere classified (SIC 74909)

Directors and company secretaries

Name Role Born Appointed Other companies
Stephen Michael Semlitz Director Feb 1953 5 Nov 2001 37 other companies
Heiko Voelker Director Dec 1962 5 Nov 2001 11 other companies

Other companies run by these 2 directors

A firm is run by people, and their other companies are their track record: what they built, what closed, and anything that failed. It is the check most people never think to make.

other companies
43
closed down
9
run together
5

In the full report: all 43 companies, named

  • What each company does, and whether it is still trading
  • Which of these 2 directors sit on each board, and since when
  • Any that went into liquidation or administration
  • The 5 companies these 2 directors run together
  • All 7 people who have ever been directors, with their dates
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Key dates in its history

Hartree Partners Advisory Services U.K.’s history from the FCA register and Companies House, newest first.

Key events (10) All events (22)

2026

31 July 2026

  • Brookfield Asset Management Ltd became the majority owner (50–75% of shares)

Companies House

2018

1 May 2018

  • Hartree Partners, LP gave up control

Companies House

2017

2 November 2017

  • Hartree Partners, LP took control (75–100% of shares)

Companies House

2015

17 February 2015

  • Changed its registered name from "HETCO Advisory Services U.K. Limited"

FCA register

2013

1 April 2013

  • Regulated by the FCA from this date

FCA register

2006

18 September 2006

  • Changed its registered name from "Hess Energy Company (UK) Limited"

FCA register

2002

23 July 2002

  • Regulated by the Financial Services Authority from this date
  • FCA imposed a requirement (Energy Market Participant)
  • Applied to cancel its FCA authorisation

FCA register

2001

19 October 2001

  • Incorporated at Companies House

Companies House

In the full report: all 22 events

  • All 22 events in its history (10 shown here)
  • Every director appointment and resignation: 10
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Firms like Hartree Partners Advisory Services U.K.

Other firms of the same type (financial adviser), nearest first.

In London

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Firms are listed by type and location, best known first. Being listed is not a recommendation: check any firm before you deal with it.

Get the full report on Hartree Partners Advisory Services U.K.

Everything on this page, plus everything locked above, in one dated PDF you can keep, file or send on.

  • 43 other companies its directors have run, named
  • 3 background checks on its contact details
  • All 22 events in its history

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Frequently asked questions about this firm

Is Hartree Partners Advisory Services U.K. Limited FCA authorised?
Hartree Partners Advisory Services U.K. Limited (FRN 207789) is on the FCA register, but its authorisation is changing (authorisation being cancelled). Check the register before dealing with it.
What is Hartree Partners Advisory Services U.K.’s phone number and website?
The FCA register lists the phone number 020 7201 7134 and the website hartreepartners.com for Hartree Partners Advisory Services U.K.. If you were given different contact details, use these to check with the firm before going any further.
Is Hartree Partners Advisory Services U.K. a scam or clone?
Hartree Partners Advisory Services U.K. is a genuine FCA-listed firm, and the FCA has published no warnings about fake versions of it. Scammers do copy real firms, though, so check that any contact details you were given match the ones on the register.
Is my money safe with Hartree Partners Advisory Services U.K.?
It depends on the product, but eligible claims may be protected by the FSCS. You can also refer complaints about Hartree Partners Advisory Services U.K. to the Financial Ombudsman Service, free of charge.
Who owns Hartree Partners Advisory Services U.K.?
Hartree Partners Advisory Services U.K. is owned by Brookfield Asset Management Ltd, which holds 50–75% of shares, 50–75% of votes and can appoint and remove the board, since 31 July 2026. Before that, it was controlled by Hartree Partners, LP.
Who runs Hartree Partners Advisory Services U.K.?
Companies House lists 2 directors of Hartree Partners Advisory Services U.K.: Stephen Michael Semlitz and Heiko Voelker.
How long has Hartree Partners Advisory Services U.K. been in business?
The company was formed on 19 October 2001.
Does Hartree Partners Advisory Services U.K. use any other names?
It has previously used 2 other names: Hess Energy Company (UK) Limited and HETCO Advisory Services U.K. Limited.

Sources and links

The full report on Hartree Partners Advisory Services U.K. Limited

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