Hired this month from a 21 year Computacenter tenure and seven years as Daisy Group CEO, Muller was tasked with driving an AI augmented platform push before his death left Node4 without a permanent chief.
Neil Muller spent three decades climbing the rungs of Britain's tech supply chain. He ran the UK arm of Computacenter for 21 years, then took the CEO seat at Daisy Group for seven more, then ran Digital Space. Earlier this month, he landed the biggest job of his career: Group CEO at Node4, a private equity-backed UK managed services provider that had just committed to an AI-augmented platform push. Three weeks later, the 54-year-old is dead.
Warwickshire Police said in a statement, as reported by The Register, that ambulance services were called to Muller's home in Claverdon at 6:15 a.m. on June 7, 2026, after a report of a man in his 50s with a stab wound to the chest. He was declared deceased at 6:37 a.m. A 55-year-old woman from Birmingham was arrested on suspicion of murder at 7:33 a.m. and has since been released on bail pending further inquiries. Police said the investigation is active and that there is "no wider risk to the public."
Muller had been in the Group CEO role at Node4 only since early June 2026, according to The Register. His mandate was to refine the company's strategy and expand its AI-augmented managed services platform, an effort that positioned Node4 to compete with larger systems integrators as enterprise IT buyers started folding AI services into traditional managed services contracts. His sudden absence leaves that work without its principal architect and the company without a permanent chief weeks into a strategy refresh.
Node4 sits in the middle tier of Britain's managed services market, the kind of operator that runs datacenters, networks, and increasingly AI workloads for mid-market and enterprise customers. Muller's career traced the consolidation of that layer: a 21-year Computacenter alumnus who became UK managing director, then seven years running Daisy Group through its own private equity ownership cycle, then a stint at Digital Space. His career path, from Computacenter to Daisy to Node4, traces the structural spine of UK managed services leadership over the past quarter-century, and the three companies share a bench of executives who have moved between them.
In a statement, Node4 said it was "absolutely devastated" by the death of a leader it described as well-respected and long-serving in Britain's tech supply chain. The company added that Muller "made a meaningful impact in a short space of time." Those remarks, carried by The Register, stop short of the succession question every private equity-backed company in this position now faces: who steps into the Group CEO seat, on what timeline, and what that means for the AI-augmented strategy Muller was hired to lead.
The police investigation will run on its own clock, and the corporate one is already moving. The Register's Paul Kunert filed the story on June 10. Node4's owners will need to name an interim chief or accelerate a successor search. Peers in the channel will be reading Muller's career for lessons about succession planning in mid-market MSPs. A strategy that was three weeks old now belongs to whoever sits in the chair next.