e2e-assure & A&O Corsaire seal UK cyber partnership

SOFIAH NICHOLE SALIVIO

News Editor

e2e-assure and A&O Corsaire have formed a cybersecurity partnership aimed at UK organisations that need compliance evidence under domestic jurisdiction.

The arrangement combines e2e-assure’s security operations centre services with A&O Corsaire’s compliance assurance and testing, creating a single audit trail from assessments through to live monitoring and reporting.

The partnership targets sectors under close regulatory scrutiny, including critical national infrastructure, defence and other regulated industries. These organisations often rely on multiple suppliers for penetration testing, remediation, continuous monitoring and compliance reporting, leaving boards, auditors and regulators with fragmented evidence.

All processing and delivery will take place within the UK. The emphasis on sovereignty reflects growing concern among customers in sensitive sectors about where security data is handled, who can access it, and whether suppliers can meet procurement and certification requirements tied to UK jurisdiction.

The agreement comes as businesses prepare for tighter cyber oversight linked to planned resilience rules expected to broaden the scope of critical infrastructure. Companies in affected sectors are under pressure to demonstrate detailed control over security risks across their own operations and supply chains.

Combined model

A&O Corsaire provides penetration testing across web applications, APIs, networks, cloud and mobile environments, alongside hardware and IoT assessments, red team exercises and regulatory compliance reviews. It also works on remediation programmes, including cloud security, identity controls, zero trust architecture and compliance design.

e2e-assure operates a 24/7 UK security operations centre staffed by security-cleared professionals. Its CUMULO software integrates with existing security tools and produces reports mapped to frameworks including CAF, NIST CSF, NIS2 and IEC 62443, according to the companies.

Together, the services are intended to give clients a single evidence trail for regulatory submissions, board risk reporting and third-party audits. The aim is to place assurance work, remediation and operational monitoring within one process rather than assemble them from separate providers.

The issue has become more prominent as boards ask whether their cyber suppliers could themselves create risk. In sectors such as defence and financial services, procurement teams are increasingly examining not just a vendor’s technical service, but also its ownership, operating location and legal exposure.

Rob Domain, Chief Executive Officer and Founder, e2e-assure, said: “A CNI operator managing CAF, NIS2, and ISO 27001 shouldn’t have to stitch together outputs from separate providers and translate them for auditors. The partnership with A&O Corsaire means we can deliver that full stack, from gap assessment and penetration testing through to continuous monitoring and framework-mapped reporting. This shifts the compliance burden away from our client’s team, freeing them up for more impactful work. We’re excited that this is the first time organisations with overlapping, multi-framework obligations will be able to access that full capability from two providers whose delivery models have been explicitly designed to work as one. This will be a game-changer for sectors where compliance failures can result in operational disruption or loss of licence to operate. We’re proud to set a new standard for what a security partnership in a regulated environment should look like.”

Sovereign focus

The emphasis on UK-based operations reflects a wider shift in the cyber market. Buyers in regulated sectors have become more cautious about supply chain exposure, particularly where providers rely on offshore operations or cannot guarantee that client data remains under UK legal and regulatory oversight.

A&O Corsaire said its assurance practice is designed to feed findings into remediation and detection engineering, creating what it describes as a closed-loop approach. It also pointed to its CREST accreditation and long-standing work in cyber assurance and transformation.

For e2e-assure, the partnership broadens its offer beyond monitoring and detection into a fuller compliance package. For A&O Corsaire, it adds an operational security layer to support ongoing evidence gathering rather than point-in-time testing alone.

Tom McDowall, General Manager, A&O Corsaire, said: “Sovereign operations have moved from a procurement preference to a material risk question. Boards in financial services, CNI, and defence supply chains are now asking whether their security partners could themselves be a vector, and a partner that can’t answer that cleanly is a liability, not an asset. That’s the market reality this partnership was built to address. The regulatory direction of travel is unambiguous. As the UK’s NIS2-aligned legislation takes shape and procurement scrutiny of the entire security supply chain intensifies, the organisations that have already established sovereign, end-to-end security programmes will be ahead of requirements that others are still scrambling to meet. What we can now offer the market is a complete answer to that question, one that is auditable, accredited, and built entirely within the UK.”