Large German 250kg bomb explodes in south-west London

A major emergency response was triggered in Kingston, south-west London, after construction workers unearthed a suspected German 250kg high-explosive bomb. Police quickly arrived on the scene, and an army bomb disposal team was dispatched to assess and neutralise the threat.

Evacuations and safety measures

Upon confirming the nature of the unexploded ordnance (UXO), authorities established a safety cordon, initially covering the immediate vicinity. As the scale of the risk became clearer, the cordon was expanded, leading to the evacuation of thousands of residents, local schools, and Kingston University.

To ensure public safety, roads were closed, and transport links were disrupted. Residents returning from work were advised to stay away until the situation was resolved.

Controlled detonation and resulting damage

Bomb disposal experts worked through the afternoon to attempt a safe defusal. However, due to the condition and instability of the device, they determined that a controlled detonation was the only viable option.

The explosion caused significant structural damage to nearby buildings, particularly on Fassett Road, where multiple homes suffered broken windows and other blast-related effects. While no injuries were reported, the incident serves as a stark reminder of the lasting dangers posed by WWII-era ordnance.

Similar incidents have occurred across the UK. For example, in 2015, a German 250kg bomb discovered in Birmingham was also deemed too dangerous to move and had to be detonated in place, damaging surrounding properties.

Why are WWII bombs still being found?

During the Blitz (1940-1941) and subsequent bombing campaigns, London and other UK cities were heavily targeted by the German Luftwaffe. Many bombs failed to detonate upon impact, burying themselves deep into the ground. Today, these unexploded bombs remain hidden underground, often unearthed during construction or infrastructure projects.

How can this specific threat be mitigated?

The discovery of UXO on construction sites highlights the importance of UXO risk mitigation ahead of any groundwork on site. Brimstone UXO provides intrusive magnetometer surveys to the UK construction industry. These advanced surveys detect buried metallic objects, helping developers avoid striking dangerous ordnance during piling and excavation work.

Our UXO risk mitigation services include:

• UXO Risk Assessments – Historical research to assess the likelihood of encountering UXO.
• Non-Intrusive & Intrusive UXO Surveys – Detecting buried UXO using cutting-edge technology.
• UXO Clearance & Disposal – Safe removal and disposal of unexploded ordnance to prevent accidents.

The Kingston incident is a powerful reminder of the ongoing risks posed by wartime UXO. If you are planning construction or groundworks, ensure your site is surveyed and assessed by UXO specialists.

For more updates on UXO safety and risk mitigation, follow Brimstone UXO on Facebook, Instagram, Twitter, LinkedIn and YouTube.