Withsecure Limited

Active04451698 Private limited company

Incorporated: 30 May 2002 (24 years)
Previously known as: F-Secure Cyber Security Limited (until 21 February 2022)
MWR Infosecurity Limited (until 14 August 2019)
MWR Internet Limited (until 1 August 2003)
Industry: Other information technology service activities (62090)
Directors: Tiina Karoliina Sarhimaa
Owned by: Risto Kalevi Siilasmaa
Accounts type: Full
Region: North West
Address: 3rd Floor 1 Ashley Road
Altrincham
WA14 2DT

Website & contact details

Group website: withsecure.com
The site of this company’s group or brand.

Filing status

Accounts due: 31 December 2026
Last accounts: 31 December 2024
Conf. stmt due: 3 June 2027
Last conf. stmt: 20 May 2026

Charges

Total: 6
Outstanding: 0
Part satisfied: 0
Satisfied: 6

Officers 1 active

Officer details are public data from the Companies House register.

Sarhimaa, Tiina Karoliina

Director · Appointed 31 August 2021

Finnish

Born March 1976 (50)

Officer history (31 former)

8 July 2025

Resigned Dyson, James Robert as Director

16 May 2025

Resigned Murphy, Victoria Claire as Director

16 May 2025

Resigned Reininga, Scott William as Director

31 January 2024

Appointed Dyson, James Robert as Director

31 December 2023

Resigned Walker, Shanna Louise as Director

23 December 2023

Appointed Murphy, Victoria Claire as Director

18 December 2023

Resigned Orchard, Timothy James as Director

22 May 2023

Appointed Reininga, Scott William as Director

26 September 2022

Appointed Walker, Shanna Louise as Director

25 September 2022

Resigned Parsons, Edward Drury as Director

24 May 2022

Appointed Orchard, Timothy James as Director

30 November 2021

Resigned Loureiro, James William as Director

31 August 2021

Appointed Sarhimaa, Tiina Karoliina as Director

31 August 2021

Resigned Tulokas, Jyrki Kalevi as Director

4 November 2020

Appointed Loureiro, James William as Director

4 November 2020

Resigned Shaw, Ian Thomas as Director

26 November 2019

Appointed Parsons, Edward Drury as Director

2 July 2018

Resigned De Tonnac, Remy as Director

2 July 2018

Resigned Last, Andrew as Secretary

2 July 2018

Appointed Tulokas, Jyrki Kalevi as Director

2 July 2018

Resigned Grobbelaar, Hermann Martin Georg as Director

2 July 2018

Resigned Fidgen, Alex as Director

2 July 2018

Resigned Messenger, Iain Ernest Bradley as Director

2 July 2018

Resigned Genieser, Robert as Director

6 November 2017

Appointed Last, Andrew as Secretary

6 November 2017

Resigned Woolley, Leigh as Secretary

30 March 2017

Appointed De Tonnac, Remy as Director

30 March 2017

Resigned Bienfait, Fabrice Stephane Louis as Director

30 March 2017

Resigned Wallace, Edward Bruce as Director

30 March 2017

Resigned Ruks, Martyn John as Director

9 September 2016

Resigned Webber, Peter Michael as Director

9 September 2016

Appointed Grobbelaar, Hermann Martin Georg as Director

16 October 2015

Appointed Woolley, Leigh as Secretary

2 April 2015

Resigned Greenan, Paul Edward as Secretary

28 May 2014

Appointed Genieser, Robert as Director

28 May 2014

Appointed Bienfait, Fabrice Stephane Louis as Director

7 March 2014

Appointed Greenan, Paul Edward as Secretary

7 March 2014

Resigned Eastwood, William Harry as Director

12 November 2013

Resigned Fellows, Jeremy Robert Llewellyn as Secretary

4 November 2013

Appointed Wallace, Edward Bruce as Director

11 July 2013

Resigned Neame, Michael John as Director

11 July 2013

Appointed Eastwood, William Harry as Director

1 November 2011

Appointed Neame, Michael John as Director

21 July 2010

Resigned Munro, Stuart Ian as Director

17 December 2009

Appointed Fellows, Jeremy Robert Llewellyn as Secretary

17 December 2009

Resigned Fidgen, Alex as Secretary

11 May 2009

Appointed Ruks, Martyn John as Director

2 June 2006

Appointed Messenger, Iain Ernest Bradley as Director

2 June 2006

Appointed Webber, Peter Michael as Director

2 June 2006

Appointed Munro, Stuart Ian as Director

23 April 2004

Appointed Fidgen, Alex as Secretary

23 April 2004

Resigned Numerica Secretaries Limited as Corporate Secretary

15 August 2003

Resigned Colson, Jean Mackenzie Ward as Director

15 August 2003

Resigned Colson, Roger Frank, Doctor as Director

30 July 2003

Appointed Fidgen, Alex as Director

7 June 2002

Appointed Colson, Jean Mackenzie Ward as Director

7 June 2002

Appointed Colson, Roger Frank, Doctor as Director

7 June 2002

Appointed Numerica Secretaries Limited as Corporate Secretary

7 June 2002

Appointed Shaw, Ian Thomas as Director

7 June 2002

Resigned Form 10 Secretaries Fd Ltd as Corporate Nominee Secretary

7 June 2002

Resigned Form 10 Directors Fd Ltd as Corporate Nominee Director

30 May 2002

Appointed Form 10 Secretaries Fd Ltd as Corporate Nominee Secretary

30 May 2002

Appointed Form 10 Directors Fd Ltd as Corporate Nominee Director

Ownership 1 active

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

Risto Kalevi Siilasmaa

Individual · Notified 26 March 2026

Owns 25–50% of shares

Holds 25–50% of voting rights

Finnish

Born April 1966 (60)

Former controllers (2)

26 March 2026

Ceased Withsecure Corporation — Owns 75–100% of shares

2 July 2018

Ceased Environmental Technologies Fund 2 L.P. — Owns 25–50% of shares

Filings 238

Date	Description	Made Up To
3 June 2026	Confirmation statement with no updates	20 May 2026
2 June 2026	Cessation of a person with significant control
2 June 2026	Notification of a person with significant control
21 December 2025	Full accounts	31 December 2024
1 December 2025	Registered office address changed