AMT-SYBEX LIMITED
AMT-SYBEX LIMITED is a Private limited company (Ltd.) registered in United Kingdom under 03036807, and its current status with Companies House is active. The company was incorporated on 23 March 1995 and lists its registered address as WALLINGFORD, United Kingdom. 1 shareholder is on record for AMT-SYBEX LIMITED, and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Companies House and was last updated on 22 October 2026.
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Shareholders
1
One shareholder is currently on record for AMT-SYBEX LIMITED, held on the Confirmation Statement (CS01), filed under the Companies Act 2006.
The largest of these is AMT GROUP LIMITED, holding 100% — a majority holding.
Because the shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| AMT GROUP LIMITED | 100% | Companies House |
Officers
5
The Director of AMT-SYBEX LIMITED currently on record is Jeff Mackinnon; five officers are currently on record for AMT-SYBEX LIMITED, filed with Companies House.
The register reports 39 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at AMT-SYBEX LIMITED sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
AMT-SYBEX LIMITED sits 5 levels below its ultimate parent, Constellation Software Inc, registered in Canada. Immediately above AMT-SYBEX LIMITED is AMT GROUP LIMITED, holding 100% as filed in AMT-SYBEX LIMITED's own shareholder record with Companies House. Constellation Software Inc sits further up the chain, a link derived by walking shareholder filings across jurisdictions rather than stated in a single document.
Constellation Software Inc
Canada
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Frequently Asked Questions
Who owns AMT-SYBEX LIMITED?
One shareholder is currently on record for AMT-SYBEX LIMITED, held on the Confirmation Statement (CS01), filed under the Companies Act 2006. The largest of these is AMT GROUP LIMITED, holding 100% — a majority holding. Because the shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is AMT-SYBEX LIMITED's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for AMT-SYBEX LIMITED is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does AMT-SYBEX LIMITED have on record?
1 shareholder is shown on record for AMT-SYBEX LIMITED.
What is AMT-SYBEX LIMITED's company registration number?
AMT-SYBEX LIMITED's registration number is 03036807, filed with Companies House in United Kingdom. Its current status on the register is active.
Is AMT-SYBEX LIMITED still an active company?
AMT-SYBEX LIMITED's status on Companies House is listed as active.
When was AMT-SYBEX LIMITED incorporated?
AMT-SYBEX LIMITED was incorporated on 23 March 1995, according to Companies House.
What is AMT-SYBEX LIMITED's registered address?
The registered address on file for AMT-SYBEX LIMITED is WALLINGFORD, United Kingdom.
What legal structure is AMT-SYBEX LIMITED registered as?
AMT-SYBEX LIMITED is registered as a Private limited company (Ltd.) in United Kingdom.
Who are the officers/directors of AMT-SYBEX LIMITED?
The Director of AMT-SYBEX LIMITED currently on record is Jeff Mackinnon; five officers are currently on record for AMT-SYBEX LIMITED, filed with Companies House. Management authority at AMT-SYBEX LIMITED sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does AMT-SYBEX LIMITED have a parent company or subsidiaries?
AMT-SYBEX LIMITED sits 5 levels below its ultimate parent, Constellation Software Inc, registered in Canada.
Can Zavia monitor changes to AMT-SYBEX LIMITED's ownership over time?
This profile reflects a point-in-time snapshot from Companies House. Zavia's monitoring API can track changes to AMT-SYBEX LIMITED's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access AMT-SYBEX LIMITED's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United Kingdom, so records like AMT-SYBEX LIMITED's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Companies House and was last synced on 22 October 2026.