Story Highlight
– Explosion at ESP Smile’s warehouse shook Swindon homes.
– No injuries reported despite one worker inside warehouse.
– HSE investigating sublimation calendar machine’s safety concerns.
– Similar explosion in South Wales resulted in director’s death.
– Companies urged to cease operations if in doubt.
Full Story
An explosion on the evening of September 24 has sent shockwaves throughout Swindon, igniting concerns over safety in industrial settings. The incident occurred at ESP Smile’s warehouse located within the Groundwell Industrial Estate, where flames erupted dramatically, prompting a swift response from fire services across several counties.
Fire brigades from Dorset, Wiltshire, Oxfordshire, and Gloucestershire rushed to the scene and worked tirelessly throughout the night and into the early hours of the following day to control the blaze. The scale of the explosion was such that it captured national media attention, with local residents reporting a force strong enough to rattle homes in the vicinity.
In a fortunate turn of events, although a worker was present in the warehouse during the explosion, there were no injuries reported. This has raised questions about the safety protocols in place at the facility, particularly regarding the operating machinery thought to be responsible for the incident.
The explosion is linked to a sublimation calendar machine made by Diferro. At the time of the event, this piece of machinery was in operation, and its role in the explosion is now a focal point of investigation by the Health and Safety Executive (HSE).
In light of similar past incidents, specifically a tragic explosion that occurred in South Wales at the Treforest Industrial Estate in 2023—resulting in the death of a company director—the HSE has intensified its scrutiny. The organisation has initiated steps to assess the design of the Diferro machine and investigate its manufacturing and operational safety.
Diferro equipment is distributed through two known suppliers, and as part of their investigation, the HSE is working alongside UK border officials to monitor any further importation of these machines into the country. The regulatory body aims to ensure that safety concerns are adequately addressed before more of these potentially hazardous devices are put into operation.
Furthermore, the HSE has reached out to all businesses currently using the sublimation calendar machine, issuing urgent guidance as of October 10, 2025. This guidance strongly advises companies to avoid leaving the machines unattended while connected to power. Operators have received a clear message: “cease operations if in any doubt,” highlighting the serious nature of the risks involved.
Luke Messenger, the Head of Technical Product Safety at the HSE, emphasized their extensive concerns regarding the safety of these machines, stating: “The guidance issued following the Treforest Industrial Estate incident has clear instructions – revisions to this have been published today and we will continue to share any further updates.”
He added, “We never want to see a repeat of the fatality in 2023 or the recent catastrophic explosion in Swindon.” The ripple effects of the Swindon explosion extend beyond immediate safety issues; they have reignited discussions on the regulations surrounding industrial machinery, particularly those that have previously been implicated in safety breaches.
Local sentiment reflects a mixture of relief that no serious injuries occurred, alongside growing unease about the safety standards of industrial equipment in the area. Residents are advocating for more stringent safety measures to protect workers and nearby communities from potential hazards.
The incident has not only drawn attention to the immediate needs for safety reviews and regulation but also to the broader implications of machinery safety in the industrial sector. As investigations by the HSE continue, there will likely be ongoing discussions regarding the responsibilities of manufacturers and operators to uphold safety standards.
In conclusion, the Swindon explosion serves as a sobering reminder of the potential dangers present in industrial environments and the necessity for continued vigilance in safety practices.































This incident is a stark reminder that assumed low risk does not equal no risk. It is vital that operations stop immediately if there are any doubts about equipment safety. A thorough investigation should establish the cause and any design or maintenance failures so lessons can be shared across the industry. Employers must ensure machines are inspected, maintained and operated to manufacturer guidance and that safe systems of work and emergency procedures are in place and practised. Regulators and businesses should consider whether existing guidance is sufficient or if stronger controls are needed to prevent similar events.
This incident is a stark reminder that equipment risks must be treated as immediate and serious. Even with no injuries this time, a full HSE investigation and prompt root cause analysis are essential. Employers should suspend use of any machinery suspected of being unsafe until it has been inspected and cleared by a competent person. Workers must be briefed on the outcome and on emergency procedures, and any corrective actions or design changes should be implemented without delay. Regulators and industry bodies should review guidance and share lessons to prevent recurrence.
This incident is a stark reminder that machinery risks must be treated as urgent and ongoing. Even without injuries, we need immediate root cause investigation and prompt action to prevent recurrence. Employers should suspend use of any equipment suspected to be unsafe until it has been inspected and certified by a competent person. Ensure all staff receive clear training on safe operation and emergency shutdown procedures and that risk assessments and maintenance records are up to date. Regulators and companies should share findings quickly so lessons can be applied across the sector and similar machines are reviewed to protect workers and the public.
This incident is a serious reminder that equipment must be inspected, maintained and operated strictly in line with manufacturer guidance and risk assessments. If there are any doubts about a machine’s safety operations should stop immediately until a competent person can confirm it is safe. Employers must ensure workers are trained, emergency procedures are rehearsed and that any modifications or repairs are properly documented and certified. Thorough investigations and swift action to address root causes are needed to prevent recurrence.