The UK light rail sector is reviewing tram safety ahead of the 10th anniversary of the Croydon derailment, one of the deadliest accidents in modern British tram history.

The derailment occurred on 9 November 2016, when a Tramlink vehicle overturned near Sandilands Junction in south London. Seven people died and more than 50 were injured. The upcoming anniversary has prompted renewed scrutiny of what has changed since.

Rail Business UK reports that the safety review comes as operators and regulators assess how far recommendations made after the crash have been implemented across the national tram network.

What happened at Croydon?

The tram derailed on a sharp curve as it travelled from the Addington Village direction toward Sandilands. The vehicle overturned onto its side. The accident remains the deadliest in the history of UK tram operations in London.

An extensive investigation followed. The Rail Accident Investigation Branch examined the causes. The Office of Rail and Road and the British Transport Police also conducted their own processes. The driver was subsequently tried and acquitted of manslaughter, with the court accepting that he had lost awareness shortly before the curve.

What did the investigations recommend?

The RAIB's final report set out a series of recommendations covering:

• systems to monitor tram speed and alert drivers, or intervene automatically;
• protection against driver fatigue and loss of attentiveness;
• crashworthiness and occupant protection in tram vehicle design;
• signage, lighting and emergency access in tunnels and track sections.

The UK Trams industry body, working with the Department for Transport and the regulator, subsequently developed guidance for the sector. Operators including FirstGroup's Tramlink business at Croydon introduced measures such as enhanced speed monitoring at critical locations.

Why is the review happening now?

The 10-year mark gives regulators and operators a fixed point to measure progress against the post-accident agenda. Rail Business UK's report frames the anniversary as an occasion to check whether the safety changes prompted by the crash have taken root across all networks, not only in London.

The UK tram sector spans several light rail systems, including networks in Manchester, Birmingham, Nottingham, Sheffield, Edinburgh and Blackpool as well as Croydon. Safety standards adopted after 2016 apply across this estate, and the review is expected to examine consistency of implementation between operators.

What does this mean for passengers?

For passengers, the practical outcomes of the post-Croydon safety programme centre on speed control and driver vigilance. Curve-specific speed enforcement addresses the direct mechanism of the 2016 accident. Occupant-protection improvements address the severity of injuries when incidents do occur.

The anniversary also falls in a period when tram patronage across UK networks is rebuilding after the pandemic-era collapse in urban transport use. Operators argue that a demonstrable safety record underpins confidence in that recovery, though patronage figures remain below pre-2020 levels on most systems.

What comes next?

Further coverage of the review's findings is expected as the anniversary date approaches on 9 November, with the sector under pressure to show that the lessons of 2016 remain embedded in daily operations rather than confined to anniversary statements.