A foil helium party balloon that drifted into a power line is the likely cause of a destructive fire that consumed two homes and damaged a third in Kenninghall, Norfolk, during a heatwave last month, an independent investigation has concluded.
The blaze erupted in a field on August 9 amid tinderbox conditions and rapidly spread to nearby properties. Seven fire engines and a water carrier were deployed to combat the flames. While no serious injuries were reported, one resident was taken to a hospital for evaluation.
Initially, Norfolk Fire and Rescue Service suggested the fire may have started from a faulty power transformer in the field. However, an investigation commissioned by UK Power Networks (UKPN) found that a third-party foil-coated helium balloon likely came into contact with an overhead line. This contact created an electrical arc that ignited the balloon, sending sparks onto the dry ground.
"A forensic investigator said debris had been found on equipment attached to a pole in the field by the homes in Wood Close," according to the report.
Siobhan Fulcher, a healthcare worker whose home of 12 years was destroyed, expressed shock and disappointment. "If this can happen, perhaps these balloons should be banned," she stated, questioning how many more people would lose their homes due to such incidents.
Aaron Fulcher, 33, described hearing a "bang and cracking sound" during a family meal, later watching a "huge fire" spread across the field. Within minutes, flames reached their garden and the house was engulfed. "It happened so quickly. We saw the fire and then ten minutes later the house was engulfed," he said, adding, "It’s destroyed our community, it’s destroyed our neighbours' lives, it’s destroyed our lives."
Mark Matthews, another resident, witnessed the fire rapidly approach his home, stating, "I've never been so frightened in my life."
UKPN, which manages the electricity network in London, the South-East, and the East of England, described the incident as rare. A spokesperson confirmed that their equipment was de-energized as a safety measure and that no faults were found with their network. The spokesperson reiterated the independent investigator's finding that the most likely cause was a foil balloon contacting the overhead line.
Foil balloons are coated with a thin layer of metal that can easily conduct electricity. When such a balloon touches a power line, it can create an electrical arc and ignite nearby flammable materials, especially in dry and windy conditions. This property was highlighted in a similar incident in Tithby, Nottinghamshire, in July, where a party balloon caused a field fire. National Grid shared photos of that fire, warning that "A single balloon. A field of damage" could result and urging the public to consider the consequences before releasing balloons.
That earlier incident led to a brief power outage for 271 properties. Nottinghamshire Fire and Rescue Service had previously advised against intentionally releasing helium balloons, citing their potential to cause power outages and harm wildlife and livestock. They recommend deflating balloons before disposal.
