AppCheck is a leading cybersecurity software provider that helps businesses to detect and resolve cyber security issues before hackers can exploit them.
It provides a best-in-class dynamic application security testing (DAST) and vulnerability discovery solution, and its product scans web applications, APIs and IT infrastructure for vulnerabilities on live systems. This helps to identify security gaps that traditional tools miss and enables businesses to take proactive action to strengthen protection.
Headquartered in Leeds, AppCheck supports organisations across a broad range of sectors including financial services, healthcare, retail, higher education and the public sector. Its customer base includes mid-market businesses, larger enterprises, managed security service providers and cyber consultancies, with clients including JD Sports, Mars Group, Access Group, SIG, First Group, Dr. Martens, University of St Andrews and Age UK.
Expanding cyber security capabilities
In May 2026, LDC backed AppCheck’s management team, led by CEO Lloyd Devey, Sales Director Ben Jackson and Technical Director Graham Bacon, with a minority investment to support the business’ long-term growth strategy.
With LDC’s support, AppCheck is continuing to invest in product innovation and expanding its capabilities across the UK and international markets.
