About Our Outside IR35 Defence Contract Roles
What does a defence contractor do?
The defence sector is a significant employer of contractors in the UK, engaging professionals across engineering, technology, project management, commercial, intelligence analysis, and specialist technical disciplines to support the delivery of complex and long-running defence programmes. Contract roles arise most commonly within the Ministry of Defence, defence primes such as BAE Systems, Babcock, Leonardo, and QinetiQ, and the broader defence supply chain, where the volume and complexity of programmes require flexible specialist resource that cannot be maintained entirely within a permanent workforce. The security-sensitive nature of much defence work means that contractors operating in this sector must typically hold or be willing to obtain appropriate security clearances, most commonly SC or DV depending on the role.
The skills most valued in defence contracting reflect the sector's programme-intensive and technology-heavy character. Systems engineers with experience on complex defence platforms, project and programme managers familiar with CADMID or PRINCE2/MSP delivery methodologies, and commercial specialists with MoD procurement and DEFCONS experience are in consistent demand. Defence technology contractors, including software engineers, cybersecurity specialists, and data scientists, increasingly find opportunities as the MoD accelerates its digital and AI transformation agenda. The ability to navigate the specific governance, compliance, and security requirements of the defence environment is an essential differentiator for contractors entering the sector for the first time.
What is the market like for defence contractors?
Defence contracting in the UK is underpinned by a substantial and long-term investment programme in the armed forces, with major platforms including Type 26 frigates, Tempest, Ajax, and the nuclear deterrent creating multi-decade pipelines of engineering and programme management contract demand. The government's commitment to increased defence spending, combined with the operational pressure created by the changed security environment in Europe, is driving additional investment and contractor demand across both traditional defence engineering and newer areas including cyber, space, and autonomous systems. Security clearance is a significant entry barrier that constrains supply and supports rates for cleared contractors above those achievable in comparable uncleared roles.
What does Outside IR35 mean?
IR35 is UK tax legislation that determines whether a contractor is genuinely self-employed or working in a manner that resembles employment. When a contract is classified as outside IR35, the engagement is treated as a business-to-business arrangement. The contractor operates through their own limited company, invoices for services, and manages their own tax affairs including corporation tax, self-assessment, and VAT where applicable.
Outside IR35 engagements are assessed against three key factors: the degree of control the client exercises over how the work is delivered, whether the contractor has a genuine right to provide a substitute, and whether there is a mutuality of obligation between the parties. Contracts that demonstrate contractor autonomy, project-based delivery, and the absence of ongoing employment obligations are more likely to sit outside IR35. Since April 2021, responsibility for making this determination sits with the end client for medium and large private sector organisations.
On QualityContracts.co.uk, approximately 28% of roles with a stated IR35 status are classified as outside IR35. The proportion varies by sector and role type, with some disciplines seeing a significantly higher or lower share of outside IR35 opportunities. Each listing on this page displays its IR35 status where provided by the hiring organisation.
What defence roles are usually Outside IR35?
Around 45% of defence sector contracts with a stated IR35 status sit outside, a higher proportion than other public sector domains. Defence contracting has a long tradition of engaging specialists through limited companies, particularly in engineering, systems integration, and technical consultancy. BAE Systems, Rolls-Royce Defence, and tier one defence primes engage contractors on a project basis alongside MOD direct engagements. SC and DV clearance requirements significantly narrow the candidate pool and support premium rates regardless of IR35 status.
How much do defence contractors usually earn when working Outside IR35?
Contract rates for defence roles typically range from £450 to £850 per day, depending on the scope of the role, required expertise, and the delivery expectations of the engagement. Rates shown are for outside IR35 engagements and reflect the gross day rate paid to the contractor's limited company before any personal tax obligations.
How many Outside IR35 defence vacancies are there on Quality Contracts?
Over the past twelve months, we have tracked over 530 defence contract roles across the site. Of the roles currently listed on our site, around one in four are Outside IR35. Data reviewed up to August 2026.