Koios UK Ltd

Active05901256 Private limited company

Incorporated: 9 August 2006 (20 years)
Previously known as: Yard Associates Limited (until 21 October 2026)
This list may be incomplete. See all names on Companies House
Industry: Other information technology service activities (62090)
Directors: Stjepan Pavlek Posavec
Paul Stephen Newbury
Owned by: Koios Holding Ltd
Accounts type: Total exemption full
Region: Wales
Address: The Maltings
East Tyndall Street
Cardiff
CF24 5EA

Filing status

Accounts due: 30 September 2027
Last accounts: 31 December 2025
Conf. stmt due: 20 August 2027
Last conf. stmt: 6 August 2026

Charges

Total: 4
Outstanding: 0
Part satisfied: 0
Satisfied: 4

Officers 2 active

Officer details are public data from the Companies House register.

Pavlek Posavec, Stjepan

Director · Appointed 4 July 2024

Croatian

Born May 1979 (47)

Newbury, Paul Stephen, Dr

Director · Appointed 9 August 2006

Also at Propensityiq Limited, Koios Holding Ltd · more companies

Welsh

Born May 1980 (46)

Officer history (8 former)

4 July 2024

Resigned Newbury, Paul Stephen as Secretary

4 July 2024

Resigned Briggs, Stephan Grant as Director

4 July 2024

Resigned Easton, Collette Mary as Director

4 July 2024

Appointed Pavlek Posavec, Stjepan as Director

5 July 2021

Appointed Easton, Collette Mary as Director

25 February 2021

Resigned Chillingworth, Hannah as Director

24 August 2020

Resigned Easton, Collette Mary as Director

20 August 2020

Appointed Chillingworth, Hannah as Director

17 April 2018

Appointed Easton, Collette Mary as Director

9 December 2009

Appointed Newbury, Paul Stephen as Secretary

9 December 2009

Resigned Lee Barber, Jeremy as Director

9 December 2009

Resigned Lee Barber, Jeremy as Secretary

15 August 2007

Appointed Lee Barber, Jeremy as Director

15 August 2007

Appointed Lee Barber, Jeremy as Secretary

15 August 2007

Resigned Newbury, Paul Stephen as Secretary

9 August 2006

Appointed Newbury, Paul Stephen as Secretary

9 August 2006

Appointed Briggs, Stephan Grant as Director

9 August 2006

Appointed Newbury, Paul Stephen, Dr as Director

Ownership 1 active

People and entities with significant control, from the Companies House PSC register

Koios Holding Ltd

Corporate entity · Notified 4 July 2024

Owns 75–100% of shares

Holds 75–100% of voting rights

Right to appoint and remove directors

Private Limited Company

Reg. no. 09422819

Former controllers (2)

4 July 2024

Ceased Paul Stephen Newbury — Owns 25–50% of shares

4 July 2024

Ceased Stephan Grant Briggs — Owns 25–50% of shares

Group structure 4 companies

Ownership group derived from the Companies House PSC register

Koios Holding Ltd

Koios Consulting Ltd Owns 75–100% of shares

Koios UK Ltd This company Owns 75–100% of shares

Yard Associates Limited Owns 75–100% of shares

Financials

Balance sheet as at 31 December 2025 · total exemption full accounts

Net Assets: £21,574
Cash: £16,013
Employees: 13

Current Ratio: 1.1x

Trend

Net Assets

Balance sheet detail

	2025	2024	2023	2022	2020	2019
Fixed Assets	£3,101	£4,135	£328,734	£331,866	£391,002	£413,972
Current Assets	£290,261	£205,560	£1,535,702	£1,631,907	£1,700,035	£1,294,535
Debtors	£229,691	£132,158	£1,372,474	£1,414,439	£677,867	£581,514
Cash	£16,013	£27,625	£121,542	£173,554	£989,045	£686,411
Creditors (< 1 year)	£271,788	£570,597	£996,579	£1,053,928	£771,371	£623,403
Creditors (> 1 year)		£0	£296,690	£618,182	£1,022,664
Net Current Assets	£18,473	(£365,037)	£539,123	£577,979	£928,664	£671,132
Net Assets	£21,574	(£360,902)	£571,167	£289,283	£292,485	£1,079,256
Shareholder Funds				£289,283	£292,485	£1,079,256

Filings

Recent filings only. See the full history on Companies House

Date	Description	Made Up To
24 October 2026	Change of details for a person with significant control
21 October 2026	Certificate of change of name
10 August 2026	Confirmation statement with updates	6 August 2026
10 June 2026	Total exemption full accounts	31 December 2025
6 August 2025	Confirmation statement with updates	6 August 2025