directors & Company Secretary

  • R Remuneration Committee
  • A Audit Committee
  • N Nomination Committee
  •   Chairman

Nick Prest



Term in office

Nick became Chairman of Cohort on flotation in March 2006.

Background and experience

After graduating from Oxford in 1974 Nick joined the UK MOD. In 1982 Nick moved to Alvis, the defence contractor, undertaking a variety of roles before becoming Chief Executive in 1989 and Chairman and Chief Executive in 1996. Nick left Alvis following its acquisition by BAE Systems in 2004, by which time the company had become a leading international business in military land systems.

Nick was also Chairman of Aveva Group plc from 2006 until 2012 and Chairman of Shephard Media until 2020. 


Andrew Thomis

Chief Executive

Term in office

Andrew took over as Chief Executive of Cohort in May 2009.

Background and experience

Andrew graduated with an M.Eng degree in Electrical and Electronic Engineering from Imperial College London in 1987. He spent nine years in science, technology and policy roles in the UK MOD. He left in 1996 and, after a period working with public and private sector clients at Capita plc’s management consultancy arm, he joined Alvis in a role covering strategy, M&A and business development. Following the acquisition of Alvis by BAE Systems in 2004, he worked with Nick Prest and Stanley Carter on the creation of Cohort plc, acting as Finance Director during the flotation and subsequently Corporate Development Director. From 2007 to 2009 he was Managing Director of MASS. Andrew is a Fellow of the Institution of Engineering and Technology.


Simon Walther

Finance Director

Term in office

Simon joined Cohort as Finance Director in May 2006.

Background and experience

After graduating with a BSc in Toxicology and Pharmacology from University College London, Simon went on to qualify as a Chartered Accountant with Touche Ross in 1992. Simon moved to the Peninsular and Oriental Steam Navigation Company (P&O) in 1993 where he was appointed a Chief Accountant for P&O European Ferries in 1995. He has 20 years’ industry-relevant experience, with previous senior finance roles at Alvis and BAE Systems.


Stanley Carter

Non-executive Director


Term in office

Stanley has been with Cohort since its formation, initially as its Chief Executive before becoming Co-Chairman in 2009. In 2015, Stanley stepped down from Co-Chairman to become a Non-executive Director.

Background and experience

Stanley jointly founded Cohort with Nick Prest in 2006 with SCS as the launch vehicle on flotation. Prior to that he was Managing Director of SCS, which he founded in 1992 on leaving the Regular Army. During his military service as a Royal Artillery Officer he held a wide range of posts in the MOD’s central staff, in procurement and at government research establishments, and represented the UK on NATO technical committees. He received an award for the invention of a missile launcher from the UK MOD. He has held a number of directorships in technology companies and has degrees in Technology and Behavioural Science and an MSc in Information Systems.


Jeff Perrin

Independent Non-executive Director and Senior Independent Director


Term in office

Jeff joined Cohort on 1 July 2015.  He is Chairman of the Audit Committee.  Jeff was appointed Senior Independent Director on 23 July 2019.

Background and experience

A Chartered Certified Accountant, Jeff has held a number of senior financial positions including roles within Unilever, Oriflame, and the defence businesses of GEC and Radstone Technology Plc. In the latter company, he was also Chief Executive for four years until his departure a year after its acquisition by the General Electric Company in 2006.  He was Chairman of the private equity-backed defence company, Chess Technologies Limited, from 2008 until its acquisition by Cohort on 12 December 2018.

ed-lowe (2).png

Edward Lowe

Independent Non-executive Director


Term of office

Ed was appointed to the Board on 1 July 2019, and became Chairman of the Remuneration and Appointments Committee on 23 July 2019.

Background and experience

Ed joined Racal Electronics in 1980 and, over a twenty-year period, undertook a variety of commercial, sales and managerial roles. In 2000, he was appointed Vice President within Thales UK with responsibility for the commercial, sales and strategy functions. In 2005 he was appointed Managing Director of the Thales UK naval activities and led the international business line for naval platforms and services. In 2010 he was appointed Chief Operating Officer for Thales UK with operational responsibility for all Thales UK activities.

Raquel McGrath.jpg

Raquel McGrath

Company Secretary and General Counsel

Term in office

Raquel took over as Company Secretary and General Counsel from 1 October 2020

Background & Experience: 

Raquel graduated from the University of Bristol in 1991 with a Bachelor of Laws (LL.B. Hons) followed by Law Society Finals at the College of Law, Chester in 1993.  She started her career as a Solicitor and articled clerk with Slaughter and May in London before moving to Melbourne to work with Allens Arthur Robertson as a Senior Associate. After returning to the UK, she took on the role of Head of Legal and Company Secretary at the AIM listed logistics business DX (Group) plc.  Most recently Raquel was General Counsel and Company Secretary at Oxford Policy Management.  Raquel joined Cohort plc as Interim Group Legal Counsel and Deputy Company Secretary in November 2019 before taking over the role of Company Secretary from Simon Walther in October 2020, in addition to being appointed General Counsel for the Cohort Group.

Beatrice Nicholas LR.jpg

Dr Beatrice Nicholas

Non Executive Director

Term in office:

Dr Beatrice Nicholas joined Cohort on 1 September 2021.  

Background and experience

Beatrice started her career at the GEC Hirst Research Centre in 1984, moving to GEC Marconi Avionics in 1995, where she held several senior management positions. As part of the wider consolidation in the sector, GEC Marconi Avionics became part of BAE Systems in 1999 and then Selex Galileo Limited in 2012, subsequently part of the Leonardo Group.

In 2010 she was appointed Senior Vice President with responsibility for leading the electronic warfare business. In 2013, she was appointed Director of Engineering for the Airborne and Space division of Leonardo UK Limited, with responsibility for the execution of all engineering projects within the division. 

Following her retirement from Leonardo UK Limited in 2017 she established an independent consultancy, Beatrice Nicolas Consulting Limited, advising on diversity and inclusion.