Signals to Danger

On the morning of 12 December 1988, three trains collided near Clapham Junction in south London. Thirty-five people lost their lives, and hundreds more were injured. The disaster raised a fundamental question about railway safety: how could a signalling system designed to keep trains apart allow one to proceed towards another standing on the same line? In the second episode of our three-part serie...

On the morning of Monday 12 December 1988, three trains collided on the approaches to London's Clapham Junction station, killing 35 people and injuring 484 others. It was the height of the morning rush hour. Thousands of commuters were travelling towards London Waterloo, relying on one of Britain's busiest railway networks to carry them safely into the capital. The 07:18 service from Basin...

On the night of 5 July 1978, passengers boarded the overnight sleeper service from Penzance to London Paddington, expecting to wake the following morning as their train approached the capital. But in the early hours of 6 July, as the train approached Taunton in Somerset, a fire developed aboard one of its sleeping carriages. By the time railway staff became aware of the danger, smoke and toxic gas...

Moving freight by rail sounds straightforward: choose a wagon, load it up and send it on its way. But behind an uneventful arrival lies a system of engineering decisions, examinations, handling restrictions and communication. Following our episodes on Linslade and Surbiton, this time we follow an imaginary track panel from loading to destination. How do we choose a suitable wagon? What keeps its l...

On 4 July 1971, a ballast train passing through Surbiton derailed into the path of a Portsmouth Harbour passenger service approaching at 72 miles an hour. The collision left the leading passenger carriage on its side, damaged both trains and tore up the railway. Remarkably, nobody lost their life. But why had an empty wagon in the middle of the ballast train left the rails? This time on Signals to...

Bedford: What We Know and What We Don’t On 19 June 2026, two passenger trains collided near Elstow, south of Bedford. Driver Shaun Burton lost his life, and at least 160 people were injured. RAIB has now published its interim report. In this Rail Safety Review, we examine the evidence released so far: an unexpected AWS warning at a green signal, a following train passing that same signal at red, a...

In the early hours of 9 December 1982, a late-running sleeper service departed London Euston for Glasgow. Ahead of it, a freight train had passed through Linslade Tunnel carrying prefabricated railway components. One of those components had moved beyond the loading gauge, struck the tunnel portal and fallen onto an adjacent line. A routine decision then placed the sleeper directly in its path. Thi...

“The wrong kind of leaves” has become one of the railway’s most frequently mocked excuses—but leaves on the line create a genuine and potentially serious safety problem. In this episode of Signals to Danger, we explore how fallen leaves are transformed into a stubborn layer of contamination on the railhead, why that can leave trains struggling to accelerate or stop, and how it can interfere with t...

On 21 October 2024, two Transport for Wales trains collided head-on near Talerddig on the Cambrian Line. It was a route controlled using ETCS — one of the most advanced signalling systems in use on the British railway — yet the accident began with one of the oldest challenges the railway has ever faced: low wheel–rail adhesion. In this episode of Signals to Danger, we reconstruct the events leadin...

How does the railway find a crack hidden inside a solid steel rail—and what happens when it does? In this Rail Safety Review, we explore how rails become damaged, the development of metal fatigue and rolling-contact fatigue, and the overlapping safeguards used to prevent defects becoming broken rails. From visual inspections and reports of rough riding to ultrasonic testing, Network Rail’s measure...

On the evening of 5 November 1967, a packed passenger train was making an otherwise ordinary journey from Hastings towards London Charing Cross when, on the approach to Hither Green, its third coach suddenly derailed at around 70 mph. What followed became one of Britain's deadliest post-war railway accidents. Coaches overturned, the train was scattered across more than half a kilometre of railway...

On 14 August 2026, a London-bound passenger train derailed while approaching Wickford in Essex, with its rearmost vehicle travelling for around 1.5 miles while derailed before the train came to a stand. In this Flash Briefing, we look at the first information released by the Rail Accident Investigation Branch (RAIB), including the driver's report of a kink in the track, evidence of a track misalig...

On 13 August 2026, Southern service 1F34 was approaching Lewes when the rear three vehicles of the eight-car train derailed and overturned on the railway embankment. A week on, the Rail Accident Investigation Branch has released an update providing our first detailed insight into what happened — and in this flash briefing, we take a look at what we know so far. We’ll examine the track geometry irr...

This time on Rail Safety Review, we’re looking at a couple of recent RAIB reports — including something we haven’t covered before: a discontinuation report following a tram derailment at Manchester Piccadilly. Then we head to Sheffield to look at the report into a Supertram collision with two pedestrians at Staniforth Road footpath crossing, including some interesting findings around crossing desi...

Before two trains collided outside Watford Junction in 1996, every safeguard appeared to be in place. This week on Signals to Danger, we examine a crash that left investigators asking whether the cause lay with the driver, the signalling, or something far less obvious. As the evidence unfolds, a far more complicated picture begins to emerge. OPENING CREDITS Music track: Epic Motivation by Aylex So...

This month's Rail Safety Review takes a closer look at one of the railway's most persistent risks: level crossings. Following the latest developments in the RAIB investigation into the collision at Hoghton level crossing, we explore why level crossing fatalities are rising, examine recent accident investigations at Pewsey and Bourneview, and look at the engineering, education and safety campaigns...

This week, Signals to Danger heads back to Glasgow to examine the tragic head-on collision at Newton Junction in July 1991. On a busy Sunday evening, a series of seemingly routine train movements, a recently remodelled junction and a single signal passed at danger combined to produce one of Britain's most devastating suburban railway accidents. Four people lost their lives, including both drivers,...

A return to the world of Rail Safety Reviews! The Rail Accident Investigation Branch has recently published both a new Summary of Learning on overspeeding and its Annual Report for 2025. In this episode we take a step back from individual accidents to explore what these documents reveal about the wider picture of railway safety. We'll look at the common themes behind recent overspeeding incidents,...

What caused two passenger trains to collide on one of Britain's busiest main lines? After a break from the podcast, we return to discuss last weeks collision at Elstow. With the first RAIB findings now published, we break down the known facts, the safety systems involved, and the key questions that remain unanswered. OPENING CREDITS Music track: Epic Motivation by Aylex Source: https://freetouse.c...

A quick update on a serious derailment in Baden-Württemberg, Germany, on 27th July 2025. Regional Express 55 left the tracks after heavy storms, with early signs pointing to a landslip. At least three people have died and many more are injured. We break down what’s known so far and draw early comparisons to past incidents like Carmont in the UK. Hosted on Acast. See acast.com/privacy for more info...

Welcome to another Rail Safety Review, and yes, despite the joys of a strep throat and a voice that sounds like it's been dragged through ballast, Dan is back to talk trains. This week we’re diving into the chaos that’s been brewing recently on the West Coast Main Line—a derailment near Bletchley, a buffer bump at Euston, trees taking down wires, freight trains giving up the ghost, and more disrup...

In June 1972, a day of leisure for railway workers and their families ended in tragedy on the curve at Eltham Well Hall. This episode examines the circumstances surrounding one of the UK's most avoidable rail accidents — a derailment caused by a driver under the influence of alcohol. This week we’re covering how a single catastrophic decision led to the loss of five lives and injury to over a hund...

In this Rail Safety Review, we dive into the RAIB’s 2024 Annual Report, exploring six key safety themes from the past year—from track worker and platform safety to vegetation management and asset integrity. We also take a closer look at the concept of Human Factors and how they influence modern accident investigations, including incident and human performance factors. Even without new RAIB reports...

On this weeks episode of Signals to Danger we head back to 1989 and the South London suburb of Purley. After a signal is passed at danger one train collides into the rear of another that has just the station, with carriages tumbling down an embankment into the back gardens of local residents. Join us to hear what happened and what investigators found when they descended on the scene. Merch - bit.l...

Join us for the first Rail Safety Review of this new run of Signals to Danger, where we take a look at the current coming and goings in railway safety. This time out we talk a little about the train vs tractor at Nordan Farm, the interim report into Talerddig and then sweep through what the RAIB is currently looking at. It's good to be back. OPENING CREDITS Music track: Epic Motivation by Aylex So...