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Company number
11113597

CALLISTO AGENCY SYSTEMS CO. LIMITED

Active
✓ Active company on the official register. Next accounts due 30 September 2026.

Company details

South East, England Contains OS data © Crown copyright and database right. Contains Royal Mail data © Royal Mail copyright and database right. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
Registered name
CALLISTO AGENCY SYSTEMS CO. LIMITED
Company number
11113597
Registered office
HIGHDOWN HOUSE, YEOMAN WAY, WORTHING, WEST SUSSEX, BN99 3HH, UNITED KINGDOM · 145 other companies at this postcode
Company type
Private Limited Company
Incorporated on
15 December 2017
Status
Active
Age
8 years
Nature of business (SIC)
62012 — Business and domestic software development
Accounts — next due
30 Sept 2026
Accounts — last made up to
31 Dec 2024
Confirmation statement — next due
28 Dec 2026
Confirmation statement — last
14 Dec 2025

What the register says

Facts from the register, with the dates they are filed under. Not a score: what they mean is for you to judge, and every line can be checked against Companies House itself.

Companies House register snapshot, read 02/09/2026.

People with significant control

Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors

Mr. Christian Siemers Haunso
owns 75–100% of shares · holds 75–100% of voting rights
Notified 15/12/2017
Nathalie Eline Pepping
owns 25–50% of shares
Notified 25/06/2026
William Francis Dobie
owns 25–50% of shares · holds 25–50% of voting rights
Notified 25/01/2018

Corporate structure

Who controls this company, and who they control in turn

3 controllers Drag to move · scroll to zoom · double-click to expand
Company Person Current control Ended

Connections

Mr. Christian Siemers Haunso
born 01/1971 · Switzerland owns 75–100% of shares · holds 75–100% of votes Notified 15/12/2017 Controls 4 companies
Nathalie Eline Pepping
born 04/1973 · Switzerland owns 25–50% of shares Notified 25/06/2026 Controls 8 companies
William Francis Dobie
born 11/1972 · England owns 25–50% of shares · holds 25–50% of votes Control ended 05/06/2019 Controls 2 companies

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
25/06/2026 Person with significant control added Nathalie Eline Pepping
05/06/2019 Person with significant control ceased William Francis Dobie
25/01/2018 Person with significant control added William Francis Dobie
15/12/2017 Person with significant control added Mr. Christian Siemers Haunso

Documents for CALLISTO AGENCY SYSTEMS CO. LIMITED

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Company extract£1.99

The full registration record as held today — name, number, status, registered office, company type, previous names, officers, PSC and SIC codes, timestamped for your file.

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Financial statements£3.99

Every figure the company’s own accounts state, across each filed period, with year-on-year movement. Most UK companies file small or micro-entity accounts — a balance sheet and a headcount, no turnover or profit.

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Ownership report£3.99

Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.

PDF Order

Data protection register

Registered with the Information Commissioner's Office as a data protection fee payer.

Callisto Agency Systems Co. Limited — BN99 3HH
Tier 1 · renews 16/06/2027
ICO entry

The ICO publishes no company number, so this is matched on the registered name and confirmed by the postcode. Check the ICO entry before relying on it.

Get this company via API

Every field on this page is available as structured JSON behind one endpoint and one API key.

GET /v1/company/gb/11113597
X-Api-Key: $OPENDATA_KEY
Read the API docs

Frequently asked questions

What is the company number of CALLISTO AGENCY SYSTEMS CO. LIMITED?
According to the official registry, the company number of CALLISTO AGENCY SYSTEMS CO. LIMITED is 11113597.
Where is CALLISTO AGENCY SYSTEMS CO. LIMITED registered?
The registered office is HIGHDOWN HOUSE, YEOMAN WAY, WORTHING, WEST SUSSEX, BN99 3HH, UNITED KINGDOM.
What is the SIC code of CALLISTO AGENCY SYSTEMS CO. LIMITED?
The nature of business is recorded under SIC code 62012 — Business and domestic software development.
Who controls CALLISTO AGENCY SYSTEMS CO. LIMITED?
Mr. Christian Siemers Haunso is recorded as a person with significant control, and owns 75–100% of shares, holds 75–100% of voting rights.
When are the next accounts of CALLISTO AGENCY SYSTEMS CO. LIMITED due?
The next annual accounts are due by 30 September 2026, and the last accounts were made up to 31 December 2024.

About CALLISTO AGENCY SYSTEMS CO. LIMITED (11113597)

CALLISTO AGENCY SYSTEMS CO. LIMITED is a private limited company incorporated on 15 December 2017 and registered in the United Kingdom under company number 11113597. Its registered office is at HIGHDOWN HOUSE, YEOMAN WAY, WORTHING, WEST SUSSEX, BN99 3HH, UNITED KINGDOM. The recorded nature of business is business and domestic software development (SIC 62012). The company is currently active , with statutory accounts last made up to 31 December 2024. , and the person with significant control is Mr. Christian Siemers Haunso. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 2 September 2026.

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