What happened
On 31 July 2025 Alfonso Pena, then 51, was living in a house in multiple occupation in a London suburb. A resident called the building’s caretaker to say Pena had taken her food from the shared kitchen. The caretaker checked the building’s CCTV, which showed Pena taking and eating it. He then went to speak to Pena in person, alone.
Pena was heavily intoxicated, the Crown Prosecution Service said. He threatened the caretaker, asked where he was from, called him a “Jewish terrorist”, and ran from the address shouting further abuse. He came back and stabbed the caretaker in the back, between the shoulder blades. The CPS said it was fortunate the victim was not more seriously injured.
The outcome
Pena pleaded guilty at Croydon Crown Court to common assault and possession of a bladed article, and admitted unlawfully wounding the caretaker while denying intent, claiming a psychiatric episode. The CPS reviewed the psychiatric reports, did not accept the plea, and took the case to trial on wounding with intent. A jury convicted him on 22 June 2026. On 14 August 2026 he was sentenced to six years and six months, uplifted from six years after prosecutors applied to have the antisemitic hostility treated as an aggravating feature.
What went wrong
The caretaker handled the tenant dispute alone. He took the complaint, reviewed the footage, then carried the evidence to the door himself. No source records a second person going with him, or a system that would have sent one.
The return is the part that matters. He had already been threatened and abused, and Pena had left the building. The sources do not say whether anyone was told at that point, whether the police were called, or whether he was expected to carry on working in the same corridors.
Nothing in the public record shows an inspection of the building’s risk assessment, a two-person rule for tenant disputes, or a finding against the employer or managing agent. The sources do not name the employer.
What it teaches
A caretaker in a shared house is a lone worker with a small public around him, and that public knows where he works and which door he uses. Confronting someone with evidence against them is the riskiest conversation in the job, and it is the one most likely to be held alone.
If a resident becomes abusive and walks away, the incident is not over. Someone who leaves shouting in the street can come back, and the interval is the window for telling a colleague and deciding not to finish the shift in that building.
Our lone working training covers two-person rules and the risk assessment for staff who work in other people’s buildings.
Questions for the room
- You have CCTV showing a resident has taken something. Who delivers that news, and who is in the room with you?
- A resident you have just challenged walks out of the building. What do you do in the next five minutes, and who do you tell?
- What does your employer expect you to do with the rest of a shift after a threat like that?
- How would you show, in writing, that a tenant dispute needs two staff?
Evidence and limits
Confidence: confirmed. Three sources were read in full: the CPS release, the Jerusalem Post and the Jewish Chronicle. They agree on the attack, the plea, the conviction and the uplifted sentence, and differ on Pena’s age, given as 51 by the Jerusalem Post and 52 by the others; this page prints 51 and records the difference. No source describes the caretaker’s employer, its procedures or any post-incident review, and this page does not infer them.
Sources
Reviewed 20 October 2026.