Police Probe Stone Attacks on Vehicles in St Mellons 2026

Key Points

• Officers called to Tesco car park in St Mellons around 5:30pm on Tuesday, March 10, 2026, after reports of stones thrown at vehicles, causing damage.​
• Incident part of ongoing issues with large groups of youths acting aggressively towards public and police at the same Tesco site.​
• South Wales Police implemented a dispersal order for Tesco St Mellons area, active 3pm to 10pm on Wednesday, March 11, 2026.​
• Dispersal order empowers officers to direct anyone causing or likely to cause harassment, alarm or distress to leave the area.​
• Measure responds to multiple reported incidents of antisocial behaviour and property damage in the vicinity.​
• Police urge parents and guardians to talk to young people about consequences of disorderly behaviour.​
• MP Jo Stevens received complaints from numerous St Mellons residents about property damage and stone-throwing around Tesco car park.​
• Jo Stevens noted it as one of several incidents involving large youth groups; thanked residents for raising concerns.​​
• Police encourage reporting of antisocial actions or damage; dispersal order aims to reassure residents and businesses.​

St Mellons (Cardiff Daily) March 12, 2026 – A dispersal order has been enacted by South Wales Police at the Tesco car park in St Mellons following repeated stone-throwing incidents targeting vehicles, with officers responding to the latest disturbance on March 10 amid rising concerns over youth gatherings.​

What Triggered the Police Response at Tesco St Mellons?

As reported by WalesOnline journalists, South Wales Police were summoned to the Tesco car park in St Mellons at approximately 5:30pm on Tuesday, March 10, 2026, after complaints that stones were being hurled at vehicles, resulting in property damage. This marked the latest in a series of disturbances at the site involving large gatherings of young individuals allegedly behaving aggressively towards members of the public and officers. A police representative stated that the force acted decisively to prevent further escalation and protect the community.​

How Does the Dispersal Order Work in St Mellons?

According to the WalesOnline coverage, the dispersal order covers the Tesco St Mellons area and remains in effect from 3pm to 10pm on Wednesday, March 11, 2026. Under its terms, officers can instruct individuals who are causing or may cause harassment, alarm or distress to immediately vacate the specified zone, as illustrated on an accompanying map shared by authorities. This temporary power is designed to curb antisocial conduct and provide reassurance to local residents and nearby businesses.​

What Ongoing Issues Have Been Reported at the Tesco Site?

As detailed in the WalesOnline article, South Wales Police described the March 10 incident as part of “a number of reported incidents” featuring antisocial behaviour and property damage at the Tesco car park. Large groups of youths have reportedly targeted vehicles and confronted both shoppers and law enforcement personnel on multiple occasions. The escalation prompted the activation of enhanced police powers to address the pattern of disruption.​

What Advice Do Police Offer to Parents and Witnesses?

South Wales Police, as cited by WalesOnline reporters, have called on parents and guardians to discuss the actions and ramifications of disorderly behaviour with young people under their care. Witnesses to antisocial actions or property damage in the area are urged to report these directly to officers handling the situation. The force emphasised community cooperation as key to resolving the disturbances effectively.​

What Has MP Jo Stevens Said About the Incidents?

As reported by WalesOnline, Member of Parliament Jo Stevens issued a statement acknowledging outreach from numerous St Mellons residents over reports of property damage and stones thrown at vehicles in and around the Tesco car park. Jo Stevens stated: “It is evident that this is one of several incidents involving large groups of young people.” She confirmed: “To tackle this problem, South Wales Police has enacted a dispersal order from 3 PM to 10 PM, Wednesday March 11. During this timeframe, police officers can direct anyone causing or to cause, alarm or distress leave the area, as shown on the accompanying map.”​

Jo Stevens expressed gratitude to residents for bringing their concerns regarding antisocial behaviour to her attention. She provided contact options for further discussions: email at jo.stevens.mp@parliament.uk or phone at 02921 329736, while advising to dial 999 in emergencies.​

Why Was the Dispersal Order Deemed Necessary?

WalesOnline reporting highlights that authorities implemented the dispersal directive due to escalating concerns over property damage and troubling behaviour by youth groups at Tesco St Mellons. The measure empowers law enforcement with additional authority in the surrounding region to prevent further gatherings and maintain public safety. Police view it as a proactive step to restore calm and support local businesses impacted by the disruptions.​

How Can Residents Stay Updated on St Mellons Developments?

As noted in the WalesOnline piece, residents are encouraged to join WhatsApp communities for breaking news updates on the situation. South Wales Police and local representatives like MP Jo Stevens continue to monitor the area, with the dispersal order serving as an immediate tool to deter repeat offences. Community input remains vital, as emphasised across all accounts of the incident.​

What Broader Context Surrounds Antisocial Behaviour in Cardiff?

The St Mellons Tesco incidents align with patterns of youth-related disturbances reported in Cardiff locales, though specific to this site in recent coverage. Local representatives stress the need for sustained vigilance, while police measures like the dispersal order aim to balance enforcement with community reassurance. No further offences were detailed beyond the stone-throwing and gatherings, but enquiries persist.