United Kingdom National Nuclear Laboratory Limited

Active03857752 Private limited company
Incorporated
7 October 1999 (27 years)
Previously known as
National Nuclear Laboratory Limited (until 17 December 2024)
Nexia Solutions Limited (until 10 November 2008)
United Nuclear Technologies Limited (until 8 November 2004)
Industry
Engineering related scientific and technical consulting activities (71122)
Technical testing and analysis (71200)
Directors
Owned by
Accounts type
Full
Region
North West
Address
Chadwick House Warrington Road
Birchwood Park
Warrington
WA3 6AE

Filing status

Accounts due
30 June 2027
Last accounts
30 September 2025
Conf. stmt due
21 October 2027
Last conf. stmt
7 October 2026

Officers 9 active

Officer details are public data from the Companies House register.

Director · Appointed 21 October 2026
Also at Oliver and Springer Advisory Limited, Major Projects Association
British
Born March 1960 (66)
Director · Appointed 21 October 2026
Also at Nuclear Waste Services Limited, The One Touch Switching Company Limited, Financial Ombudsman Service Limited · more companies
British
Born December 1962 (63)
Director · Appointed 29 April 2026
Also at Platform New Homes Limited, Waterloo Homes Limited, Accomplish HR Limited · more companies
British
Born September 1965 (61)
Director · Appointed 29 April 2026
British,Irish
Born June 1968 (58)
Director · Appointed 23 January 2026
Also at Nexia Solutions Limited
British
Born January 1967 (59)
Gray, Hannah Brewer
Director · Appointed 21 October 2025
British
Born January 1976 (50)
Director · Appointed 1 April 2025
Also at Nexia Solutions Limited
British
Born January 1974 (52)
Smart, Neil Graham, Professor
Director · Appointed 1 April 2025
British
Born February 1964 (62)
Wheeler, Samantha
Secretary · Appointed 18 September 2023
Officer history (42 former)
21 October 2026
Appointed Oliver, John Richard as Director
21 October 2026
Appointed Honap, Shrinivas Madhav as Director
30 September 2026
Resigned Clarkson, Iain Geoffrey as Director
29 April 2026
Appointed Clarke, Mandy Dawn as Director
29 April 2026
Appointed Tenner, Brian Thomas as Director
20 April 2026
Resigned Cormack, Ann Catherine as Director
23 January 2026
Appointed Scott, David Douglas as Director
31 December 2025
Resigned Funnell, Ian Grant as Director
21 October 2025
Appointed Gray, Hannah Brewer as Director
17 October 2025
Resigned Emerson, Edward Horatio as Director
30 July 2025
Resigned Miller, Matthew Stephen as Director
1 April 2025
Appointed Smart, Neil Graham, Professor as Director
1 April 2025
Appointed Antrobus, Julianne as Director
31 March 2025
Resigned Howarth, Paul John Arton, Dr as Director
31 March 2025
Resigned Barlow, Clare Marie as Director
31 March 2025
Resigned Garwood, Stephen John, Doctor as Director
31 October 2023
Resigned Rayment, Fiona Elizabeth, Dr as Director
18 September 2023
Resigned Dukes, David Barry as Secretary
18 September 2023
Appointed Wheeler, Samantha as Secretary
3 May 2023
Resigned Beacham, David John as Director
21 April 2023
Resigned Flint, Claire Louise as Director
21 April 2023
Appointed Cormack, Ann Catherine as Director
26 January 2022
Appointed Funnell, Ian Grant as Director
25 January 2022
Resigned Mathews, Andrew David Hugh, Sir as Director
19 October 2021
Appointed Emerson, Edward Horatio as Director
19 October 2021
Resigned Payton, Anna Charlotte as Director
1 July 2020
Appointed Rayment, Fiona Elizabeth, Dr as Director
30 June 2020
31 May 2020
Resigned Weightman, Michael William, Dr as Director
19 May 2020
Appointed Garwood, Stephen John, Doctor as Director
19 December 2019
Appointed Miller, Matthew Stephen as Director
1 October 2019
Appointed Clarkson, Iain Geoffrey as Director
30 September 2019
Resigned Lanaghan, John Malcolm as Director
19 March 2019
Resigned Dunphy, Ruth Marie as Director
16 October 2018
Appointed Barlow, Clare Marie as Director
16 May 2018
Appointed Payton, Anna Charlotte as Director
20 April 2018
Resigned Walker, Jonathan Peter, Hon as Director
16 August 2017
Resigned Atherton, Jilly-Ann as Director
24 April 2017
Appointed Flint, Claire Louise as Director
14 December 2016
Appointed Beacham, David John as Director
28 January 2016
Appointed Walker, Jonathan Peter, Hon as Director
28 January 2016
Resigned Lester, Craig Douglas as Director
1 January 2016
17 December 2015
Resigned Maudslay, Richard Henry as Director
16 November 2015
Appointed Dunphy, Ruth Marie as Director
7 July 2015
Resigned Healey, David Charles as Director
22 October 2014
Appointed Atherton, Jilly-Ann as Director
12 August 2014
Appointed Lanaghan, John Malcolm as Director
5 August 2014
Appointed Mathews, Andrew David Hugh, Sir as Director
5 August 2014
Appointed Weightman, Michael William, Dr as Director
31 July 2014
Resigned Jones, Peter Nicholas as Director
18 March 2014
Appointed Lester, Craig Douglas as Director
31 December 2013
Resigned Smale, Ian Michael as Director
25 March 2013
Appointed Dukes, David Barry as Secretary
25 March 2013
Resigned Elsden, Andrew David as Secretary
1 January 2011
Resigned Lawrence, Michael as Director
11 September 2009
Appointed Elsden, Andrew David as Secretary
7 September 2009
Resigned Quint, Susan as Director
7 September 2009
Appointed Smale, Ian Michael as Director
7 September 2009
Appointed Jones, Peter Nicholas as Director
7 September 2009
Resigned Jee, Susan as Director
7 September 2009
Resigned Quint, Susan as Secretary
30 June 2009
30 June 2009
Appointed Maudslay, Richard Henry as Director
3 April 2009
Resigned Bleasdale, Peter Anthony as Director
3 April 2009
Resigned Mayor, Amanda Jean as Director
3 April 2009
Appointed Howarth, Paul John Arton, Dr as Director
3 April 2009
Appointed Healey, David Charles as Director
3 April 2009
3 April 2009
Resigned Sharp, Jason as Director
3 April 2009
Appointed Lawrence, Michael as Director
3 April 2009
Resigned Parker, Michael David as Director
3 April 2009
Resigned Elsden, Andrew David as Director
1 February 2009
Resigned Reid, Colin Stuart as Secretary
1 February 2009
Appointed Quint, Susan as Secretary
22 July 2008
Appointed Jee, Susan as Director
30 June 2008
Resigned Edwards, John Frederick as Director
1 November 2007
Resigned Shuttleworth, Alvin Joseph as Secretary
1 November 2007
Appointed Quint, Susan as Director
1 November 2007
Resigned Shuttleworth, Alvin Joseph as Director
1 November 2007
Appointed Reid, Colin Stuart as Secretary
1 April 2005
Appointed Parker, Michael David as Director
1 April 2005
Appointed Elsden, Andrew David as Director
1 April 2005
Appointed Sharp, Jason as Director
1 April 2005
Appointed Bleasdale, Peter Anthony as Director
1 April 2005
Appointed Mayor, Amanda Jean as Director
24 March 2005
Resigned Edwards, John Frederick as Secretary
14 March 2005
Appointed Edwards, John Frederick as Director
14 March 2005
Appointed Shuttleworth, Alvin Joseph as Secretary
14 March 2005
Resigned Reid, Colin Stuart as Secretary
14 March 2005
Appointed Edwards, John Frederick as Secretary
7 October 1999
Appointed Reid, Colin Stuart as Secretary
7 October 1999
Appointed Shuttleworth, Alvin Joseph as Director

Ownership 1 active

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

Corporate entity · Notified 6 April 2016
Owns 75–100% of shares
Holds 75–100% of voting rights
Right to appoint and remove directors
Private Company Limited By Shares
Reg. no. 06859180

Group structure 3 companies

Ownership group derived from the Companies House PSC register

NNL Holdings Limited
United Kingdom National Nuclear Laboratory Limited This company Owns 75–100% of shares
Nexia Solutions Limited Owns 75–100% of shares

Filings 180

DateDescriptionMade Up ToPagesPDF
23 October 2026Appointment of a director
23 October 2026Appointment of a director
12 October 2026Confirmation statement with updates7 October 2026
30 September 2026Termination of appointment of a director
20 June 2026Full accounts30 September 2025
Show all 180 filings

Some other companies at this address

Evgil Limited
Nexia Solutions Limited
Northern Nuclear Alliance Limited
Two Way Digital Limited

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