Firmoscan
Active16951944Private limited companyLondon

CALYSTRUM LIMITED

Significant control: Rudolf Schmidt (75–100%)

Companies HouseCompanies House

From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms

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What does Calystrum Limited sell?

Registered activity: Data processing, hosting and related activities (SIC 63110). We’re building product and service lists for UK companies. Get this one when it’s ready.

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01

Summary

Generated from filed data · no estimates

CALYSTRUM LIMITED is an active private limited company (company number 16951944) incorporated on 8 January 2026, registered in London. Its registered activity is data processing, hosting and related activities (SIC 63110). No accounts have been filed yet; the first accounts are due by 8 October 2027.

There are 1,263 companies in data processing, hosting and related activities in London with filed accounts; the median reports net assets of £144 and is 6 years old.

02

Ownership and control

1 active
  • Mr Rudolf Schmidt
    Individual · since 8 January 2026
    • owns 75–100% of shares
    • holds 75–100% of voting rights
    • can appoint or remove directors

Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.

03

Key dates

Incorporated
8 January 2026under 1 yr ago
First accounts due
8 October 2027in 349 days
Confirmation statement due
22 January 2027in 90 days

Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.

04

Activity

SIC 63110
Data processing, hosting and related activities
SIC 63120
Web portals
SIC 63990
Other information service activities n.e.c.
Accounts type
No Accounts Filed
05

Financials

No accounts on record

No accounts filed yet. The first accounts are due by 8 October 2027; this page updates when they are filed.

06

Timeline

Newest first
  1. First accounts duein 349 days
  2. Confirmation statement duein 90 days
  3. Incorporated
07

Similar companies in London

Same activity (data processing, hosting and related activities), closest in incorporation date

All companies incorporated on 8 January 2026 · in Jan 2026.

08

Reminders for CALYSTRUM LIMITED

Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.

Source: Companies House register, snapshot 2026-08-31. Open Government Licence v3.0. View on Companies House. Methodology · About · Markdown.

This information comes from public filings and our automated processing of them. It may contain errors, be incomplete or be out of date, and is not advice or a credit reference. Check the official record before relying on it. Terms · Privacy · Report an error (corrected within one working day).