Defence and National Security
Audit, accounting, tax, trade and corporate finance expertise for businesses operating across the defence and national security landscape
The defence and national security sector operates within some of the world's most complex commercial and regulatory environments. Businesses must balance growth ambitions with evolving compliance requirements, international trade considerations, government procurement frameworks and increasingly sophisticated supply chains.
Against this backdrop, organisations need advisers who understand both the opportunities and the practical challenges of operating in the sector. Our specialists work together to provide joined-up advice that helps organisations navigate complexity, support growth and make informed decisions.
Heritage rooted in service
Founded in 1919 by a wartime accountant, Buzzacott has a long-standing connection to organisations that support national resilience, defence capability and the Armed Forces community.
Today, we work with businesses, entrepreneurs, investors and charities connected to these sectors, combining technical expertise with an understanding of the environments in which they operate.
How we support defence and national security organisations
Corporate Finance
Strategic advice on mergers and acquisitions, management buyouts, fundraising, valuations and growth opportunities. We help businesses assess options, prepare for transactions and navigate changing market conditions.
Fiscal IOR
Fiscal and Importer of Record services for organisations moving specialist equipment, technology and goods across international borders. Our team helps businesses manage customs, VAT and import compliance requirements across complex supply chains.
Audit and Assurance
Independent audit and assurance services designed to support governance, stakeholder confidence and regulatory requirements in highly regulated operating environments.
Business Tax
Tax advice covering compliance, structuring, international operations and growth planning. We support businesses on matters including R&D tax relief, international tax considerations and managing tax risk as organisations scale.
Business Services
Outsourced accounting, payroll and company secretarial support that helps businesses manage their day-to-day operations as they grow. We work as an extension of your team, providing scalable support that reduces the administrative burden, supports compliance and gives you more time to focus on your strategic priorities.
Areas we work in
Why work with us
Multidisciplinary expertise
Our specialists work across tax, audit, international trade and corporate finance, providing coordinated advice that reflects the wider commercial and regulatory challenges facing defence organisations.
Regulatory insight
We work with businesses operating in sectors where governance, compliance and accountability are critical, helping organisations meet their obligations while supporting commercial objectives.
Growth advisory
From early-stage technology businesses through to established operators, we support organisations at every stage of growth, investment and transaction activity.
Independent thinking
As an independent firm, our advice is objective, commercially focused and shaped around the needs of your business.
Our commitment to the Armed Forces community
Our commitment to the defence and national security sector extends beyond client work. We actively support veterans and members of the Armed Forces community through recruitment initiatives, employee networks, volunteering and charitable partnerships.
Buzzacott is proud to have an Armed Forces staff network and to work with organisations that make a meaningful difference to serving personnel, veterans and their families. Our people give their time to causes connected to defence, veterans and humanitarian response. Supporting the Royal British Legion's Poppy Appeal remains an important part of our community programme, with 31 team members volunteering in 2025.
We also actively support organisations including the Armed Forces Covenant Fund Trust, the British Red Cross, City Veterans and the Last Post Association.
Contact us
We're here to help - whether you have a question, need advice, or want to tell us about your requirements.