KX SOFTWARE LIMITED
KX Software Limited (company number NI030731) is a private limited company incorporated in Northern Ireland on 16 April 1996 and registered with Companies House. Its registered office is at 3 Canal Quay, Newry, Co Down, BT35 6BP, and its current status is Active. The company has traded under several previous names, most recently as FD Technologies Limited, before reverting to KX Software Limited.
KX Software Limited’s registered nature of business (SIC codes) covers information technology consultancy activities, other information technology service activities, and management consultancy activities. Trading as KX, the company develops the kdb+ time-series database and real-time analytics platform, used for high-performance data processing by financial institutions, aerospace and defence organisations, and other data-intensive enterprises.
KX Software Limited’s last accounts were made up to 28 February 2025, with the next due by 30 November 2026; its last confirmation statement is dated 18 December 2025. In July 2025, the KX business changed ownership when TA Associates, a US private equity firm, completed the acquisition of KX Software Limited’s then ultimate public parent, FD Technologies plc (formerly listed on AIM: FDP), taking the group private. The transaction completed on 23 July 2025.
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Shareholders
5
Shareholders of KX Software Limited
KX Software Limited’s full shareholder register is not published; UK company law requires disclosure of persons with significant control (PSC) and a statement of capital rather than a complete shareholder list. Companies House records one active person with significant control: Kx Bidco Limited (company number NI729160), registered at 3 Canal Quay, Newry, Co Down, BT35 6BP, holding 75% or more of shares and voting rights and the right to appoint or remove directors, notified on 21 July 2025. This filing reflects the July 2025 take-private transaction in which TA Associates acquired KX Software Limited’s former ultimate public parent, FD Technologies plc. Institutional shareholdings previously associated with that public-company structure are historical and have been superseded by this change.
Data availability
Major shareholders only: Companies House discloses the controlling person with significant control (Kx Bidco Limited) as of 21 July 2025, but does not publish a complete shareholder register for KX Software Limited.
Sources
- Companies House, persons with significant control register for KX Software Limited (NI030731): https://find-and-update.company-information.service.gov.uk/company/NI030731/persons-with-significant-control — filing notified 21 July 2025, retrieved 22 September 2026.
Officers
5
Directors and officers of KX Software Limited
As of 22 September 2026, Companies House records four active directors for KX Software Limited: Matthew Thomas Bagley (appointed 1 May 2026; nationality British; resident in the United Kingdom), Martin Leo Carr (appointed 23 July 2025; nationality Irish; resident in the United States), Cameron Alexander Mullen (appointed 23 July 2025; nationality American; resident in the United States), and Ashok Reddy (appointed 23 July 2025; nationality American; resident in the United States). The three directors appointed on 23 July 2025 took office on the completion date of the TA Associates take-private transaction. The register currently shows no active company secretary.
Recent officer changes
- New appointment: Matthew Thomas Bagley, Director, effective 1 May 2026 (Companies House).
- Resignation: Colette McMullan, Secretary, effective 31 August 2026 (Companies House).
- Resignation: Michael Ryan Preston, Director, effective 24 April 2026 (Companies House).
Data availability
Full: Companies House publishes current and historical officer appointments for this Northern Ireland-registered company, including nationality and country of residence for directors.
Sources
- Companies House, officers register for KX Software Limited (NI030731): https://find-and-update.company-information.service.gov.uk/company/NI030731/officers — retrieved 22 September 2026.
Group Structure
Group structure of KX Software Limited
KX Software Limited is not an independent company; it operates within a verified corporate group. Its immediate parent, confirmed via the Companies House persons-with-significant-control register, is Kx Bidco Limited (NI729160), which has held 75% or more of its shares and voting rights since 21 July 2025. Kx Bidco Limited is itself controlled by Kx Midco Limited (16431517), which is controlled by Kx Topco Limited (16431242); Kx Topco Limited has filed a statement that it has no registrable person with significant control, so no further UK-registered parent can be confirmed above this point. This structure was put in place alongside the July 2025 acquisition of the former public group FD Technologies plc by US private equity firm TA Associates. Companies House PSC filings independently confirm at least three direct subsidiaries of KX Software Limited: KX Analytics Limited, KX Software Services Limited and KX Group Ltd.
Verified corporate relationships
| Entity | Country | Registration number | Relationship | Ownership | Status | Information date |
|---|---|---|---|---|---|---|
| Kx Bidco Limited | GB (Northern Ireland) | NI729160 | Immediate parent | 75%+ shares/voting | Active | 21 Jul 2025 |
| Kx Midco Limited | GB (England) | 16431517 | Indirect parent (via Kx Bidco Limited) | 75%+ shares/voting | Active | 6 May 2025 |
| Kx Topco Limited | GB (England) | 16431242 | Indirect parent (via Kx Midco Limited); no registrable PSC above this entity | Not disclosed | Active | 6 May 2025 |
| KX Analytics Limited | GB | 14271925 | Direct subsidiary | 75%+ shares/voting | Active | 2 Aug 2022 |
| KX Software Services Limited | GB (Northern Ireland) | NI644539 | Direct subsidiary | 75%+ shares/voting | Active | 14 Mar 2017 |
| KX Group Ltd | GB (Northern Ireland) | NI692545 | Direct subsidiary | 75%+ shares/voting | Active | 14 Nov 2022 |
Recent structural changes
- Acquisition: TA Associates completed its acquisition of FD Technologies plc, KX Software Limited’s former ultimate public parent, on 23 July 2025, resulting in Kx Bidco Limited becoming the registered controller of KX Software Limited.
- Internal group reorganisation: Kx Bidco Limited was incorporated on 6 May 2025 (as Kairos Bidco Limited, renamed 28 October 2025) as the acquisition vehicle for the transaction.
Data availability
Partial: the immediate parent and three direct subsidiaries are verified via current Companies House PSC filings. Internal group records reference additional related entities (including KX Analytics (Ireland) Limited, KX Systems Hungary Kft, KX (Hong Kong) Limited, First Derivatives entities in the US, Canada and Hong Kong, KX Software I Limited, Imbolg Limited, KX Systems Ltd and MRP Holdings Limited) that were not individually re-verified against their own PSC filings in this update.
Sources
- Companies House, persons with significant control registers for NI030731, NI729160, 16431517, 16431242, 14271925, NI644539 and NI692545 (find-and-update.company-information.service.gov.uk), retrieved 22 September 2026.
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Frequently Asked Questions
What does KX SOFTWARE LIMITED do?
Developer of the kdb+ time-series database and real-time analytics platform (KX); IT consultancy and data technology services; registered in Northern Ireland since 1996.
Who owns KX SOFTWARE LIMITED?
Sole disclosed controller is Kx Bidco Limited, holding 75% or more of shares and voting rights per Companies House PSC filing dated 21 July 2025; full share register not public.
Who is KX SOFTWARE LIMITED's UBO (Ultimate Beneficial Owner)?
No individual UBO disclosed; top UK holding entity Kx Topco Limited files a statement of no registrable person with significant control.
What is KX SOFTWARE LIMITED's company registration number?
KX SOFTWARE LIMITED's registration number is NI030731, filed with Companies House in United Kingdom. Its current status on the register is active.
Is KX SOFTWARE LIMITED still an active company?
KX SOFTWARE LIMITED's status on Companies House is listed as active.
When was KX SOFTWARE LIMITED incorporated?
KX SOFTWARE LIMITED was incorporated on 16 April 1996, according to Companies House.
What is KX SOFTWARE LIMITED's registered address?
The registered address on file for KX SOFTWARE LIMITED is Co Down, United Kingdom.
What legal structure is KX SOFTWARE LIMITED registered as?
KX SOFTWARE LIMITED is registered as a Private limited company (Ltd.) in United Kingdom.
Is KX SOFTWARE LIMITED listed on a stock exchange?
Not itself listed; former ultimate public parent FD Technologies plc (AIM: FDP) was taken private by TA Associates on 23 July 2025.
Who are the officers/directors of KX SOFTWARE LIMITED?
Four active directors as of September 2026: Matthew Bagley, Martin Carr, Cameron Mullen and Ashok Reddy; no active company secretary.
Does KX SOFTWARE LIMITED have a parent company or subsidiaries?
Subsidiary of Kx Bidco Limited within the KX group, controlled since 23 July 2025 by US private equity firm TA Associates; verified direct subsidiaries include KX Analytics Limited, KX Software Services Limited and KX Group Ltd.
Can Zavia monitor changes to KX SOFTWARE LIMITED's ownership over time?
This profile reflects a point-in-time snapshot from Companies House. Zavia's monitoring API can track changes to KX SOFTWARE 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 KX SOFTWARE 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 KX SOFTWARE 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 September 2026.