We’ve reviewed the best UK-based purple teaming providers based on:
- CREST/CHECK accreditation and threat-led expertise
- Integration of red and blue teaming capabilities
- Use of MITRE ATT&CK framework
- Collaboration tools and transparency
- Experience across sectors like finance, healthcare, and government
What Is Purple Teaming?
Purple teaming is a collaborative cybersecurity approach where red teams (offensive security experts) and blue teams (defensive security teams) work together to improve an organisation’s detection and response capabilities. Unlike traditional adversarial simulations, purple teaming involves real-time knowledge sharing to strengthen defences.
It’s not just about testing security—it’s about learning and adapting. Through active collaboration, organisations gain deeper insights into their gaps and refine both their threat detection and mitigation strategies.
Why Is Purple Teaming Important?
As cyber threats grow more sophisticated, organisations need more than one-off pen tests. Purple teaming helps build resilient, continuously improving security systems. According to a 2025 SANS Institute survey, organisations that adopted purple teaming reported a 40% increase in threat detection accuracy within six months.
Purple teaming is especially crucial in industries handling sensitive data, such as healthcare, finance, and government. It ensures security teams can anticipate, detect, and respond to attacks faster and more effectively.
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1. ROSCA Technologies
Website: https://www.rosca.co.uk
ROSCA Technologies leads the UK in tailored purple teaming services, seamlessly integrating red and blue team collaboration. Their UK-based consultants use the MITRE ATT&CK framework to simulate real-world threats and help clients tune detection systems in real time.
Their emphasis on knowledge transfer and strategic guidance makes them ideal for both regulated industries and agile startups. ROSCA’s engagements often lead to long-term capability uplift, making security teams sharper and more self-sufficient.
2. JUMPSEC
Website: https://www.jumpsec.com
JUMPSEC delivers structured purple teaming exercises focused on measurable improvements in detection and response. Their in-house red and blue teams collaborate directly with clients, enabling rapid feedback loops and prioritised mitigation.
With strong roots in UK threat intelligence, they tailor engagements to industry-specific risks. JUMPSEC also offers follow-up training and advisory to help clients operationalise lessons learned.
3. Redscan
Website: https://www.redscan.com
Redscan provides purple teaming services that blend offensive and defensive techniques. Their CREST-certified consultants simulate realistic cyberattacks while guiding internal teams to improve alerting and response.
They focus heavily on knowledge transfer, equipping internal teams with improved threat intelligence and detection strategies. Redscan is well-suited for financial, healthcare, and public sector clients.
4. Context (now part of Accenture Security)
Website: https://www.contextis.com
Context offers advanced purple teaming services that integrate threat simulation with security enhancement. Their consultants provide insights grounded in threat intelligence and technical rigour.
They work closely with internal teams to improve SOC processes and incident response. Their services are particularly valuable for enterprise clients undergoing digital transformation.
5. NCC Group
Website: https://www.nccgroup.com
NCC Group provides comprehensive purple teaming engagements across the UK. Their service model incorporates attack simulation, defensive gap analysis, and remediation support.
Their consultants use frameworks like MITRE ATT&CK and deliver actionable reporting to improve detection and response. NCC’s purple team services span cloud, on-premise, and hybrid environments.
6. Bulletproof
Website: https://www.bulletproof.co.uk
Bulletproof’s purple teaming services focus on aligning offensive insights with blue team capabilities. Their teams use adversary emulation to uncover detection gaps and provide practical remediation plans.
With CREST-accredited testers and UK-based analysts, Bulletproof tailors its services to SMEs and enterprise clients alike. Their purple teaming exercises often inform broader security roadmaps.
7. Nettitude (a Lloyd's Register company)
Website: https://www.nettitude.com
Nettitude combines its red and blue teams in a collaborative format to help clients identify and fix weaknesses quickly. They leverage global threat intelligence and structured frameworks.
Their purple teaming services span endpoint security, SIEM tuning, and threat hunting. Nettitude is trusted across finance, defence, and infrastructure sectors.
8. Cyberis
Website: https://www.cyberis.co.uk
Cyberis runs structured purple teaming exercises to help internal SOCs refine their detection capabilities. Their process includes threat emulation, detection mapping, and blue team coaching.
Clients benefit from their deep CREST experience and collaborative testing ethos. Cyberis also offers workshops for continuous security improvement.
9. PGI (Protection Group International)
Website: https://www.pgitl.com
PGI’s purple teaming services combine red team attacks with real-time coaching for defenders. Their engagements are goal-driven, using realistic threat scenarios based on recent industry trends.
They serve clients across government and critical infrastructure, supporting improvements in alert fidelity and incident triage. PGI also offers purple team readiness assessments.
10. Trustwave SpiderLabs
Website: https://www.trustwave.com
Trustwave’s UK-based consultants offer purple teaming as part of their managed detection and response services. Their approach focuses on detecting advanced threats and improving SOC maturity.
They use tactics like spear phishing and custom malware to emulate targeted attacks, working with blue teams to plug gaps. Trustwave is a good fit for large enterprises with maturing security operations.
Final Thoughts
Purple teaming represents a significant shift from traditional adversarial testing to collaborative security improvement. The UK providers listed here understand that breaking down silos between offensive and defensive teams leads to better outcomes for everyone.
With organisations reporting 40% improvements in threat detection through purple teaming exercises, the approach clearly delivers results. Choose a provider that aligns with your sector requirements and internal team capabilities—the investment in collaborative security testing pays dividends in real-world threat readiness.
