Cycling in London at Night: What the Data Says About Safety

Cycling in London at night is safe if you choose your streets, and the choice matters more than it does by day. One in four collisions that injure a cyclist in London (25%) happens in the dark. Darkness alone barely changes how bad a collision is: 21% of collisions in the dark are serious, against 20% in daylight. The hour matters more. Between 10pm and 5am, 25% of collisions kill or seriously injure the cyclist, against 20% during the working day, because late roads are emptier and traffic is faster. Only 43% of London's road and path network is mapped as lit, so the best night route is rarely the one you would ride at noon.

Is it safe to cycle in London at night?

For most journeys, yes. There are fewer collisions at night than by day because far fewer people are riding. Transport for London's records show 6,383 collisions in the dark that injured a cyclist between 2021 and 2025, against 19,086 in daylight.

What changes is the kind of risk. By day, the danger is volume: crowded junctions, queues, vehicles turning across you at low speed. By night the roads empty out. Drivers go faster, expect to see nobody, and a rider is harder to pick out against shop fronts and headlights. There are fewer collisions, and a larger share of them are serious. That shift is strongest late on, after the evening rush has cleared.

What time of night is most dangerous for cyclists?

The early hours. The chart shows when collisions that injure a cyclist happen. On weekdays the bulk of them are in the rush hours, and the count falls away steadily after 8pm. But the share of collisions that are serious moves the other way.

"All injuries" counts collisions in which a cyclist was injured. "Serious" counts those in which the cyclist was killed or seriously injured. All figures are for 2021 to 2025, weekdays and weekends together.

The evening, from 7 to 10pm, looks like the daytime: plenty of people about, moderate speeds, the same one-in-five serious share. After 10pm it rises to one in four and stays there until the morning rush begins. The small hours at weekends are the clearest case. Between midnight and 5am on Saturdays and Sundays, 28% of collisions are serious.

How much of London is lit at night?

Less than most people assume. Using OpenStreetMap's lighting tags and mapped street lamp positions, about 10,000 km of London's 23,500 km of roads and paths are mapped as lit, or 43%. Main roads and town centres are almost all lit. The gaps are the places cyclists like best by day: canal towpaths, park paths, riverside routes, and the quiet cut-throughs between housing estates.

That is the real difficulty with riding at night. The safest daytime route often runs through the dark. A towpath with no traffic at all is ideal at 2pm and a poor choice at 11pm, when you cannot see the surface and nobody can see you. The fully lit alternative is often the main road you were avoiding. The answer is usually a third option: a lit residential street that runs parallel to both.

The map below shows London after dark. Lit roads glow amber and unlit ones sit in blue. Pan to your own way home.

How do you plan a safe cycling route at night?

1. Prefer lit streets, even if the ride is a little longer. Being seen is your best protection at night, and seeing the road surface is the second.
2. Do not swap a dark path for a fast main road. Look for the lit back street between the two. There nearly always is one.
3. Be most careful after 10pm. Roads are emptier and faster, and the share of serious collisions rises from one in five to one in four.
4. Avoid unlit towpaths and parks after dark, however pleasant they are by day.
5. Use lights and something reflective that moves. Lights are a legal requirement after dark in the UK. Reflective ankles or pedals catch a driver's eye because they move.
6. Let the route planner do it. Cyclemate switches to night routing automatically after sunset and favours well-lit streets. You can see how much of a route is lit before you set off. We explained how it works in Night mode.

Do people actually cycle at night in London?

They do. In 9,613 London rides navigated with Cyclemate between May and September 2026, 14% started after 8pm, and that was in summer, when it stays light until after nine. Evening is the busiest part of the day for navigated rides overall, as we found in When does London cycle?. From October to March, a ride home at 6pm is a ride in the dark, which puts London's single busiest cycling hour into night conditions for half the year.

Notes and sources

• Collision data: Transport for London road-collision records, compiled from police reports, 1 January 2021 to 31 December 2025. We counted collisions in which at least one casualty was travelling by pedal cycle. "Dark" and "daylight" are the light conditions recorded at the scene. "Serious" means the cyclist was killed or seriously injured. For the wider picture, see Is cycling in London safe?.
• Lighting data: © OpenStreetMap contributors, from lit tags on roads and paths and from mapped street lamps. It is maintained by volunteers and is approximate. A street with no lighting information is counted as not lit, so the true lit share is likely somewhat higher than 43%. Explore it on the London map, and read how we built the layer in Seeing London's roads after dark.
• Ride data: shares of completed London rides navigated with Cyclemate, 14 May to 14 September 2026. No individual ride or rider is identifiable.
• Counts are not rates. We do not know how many people cycle at each hour across London, so these figures describe how serious collisions are when they happen, not the chance of having one.
• Method: aggregated by Cyclemate on 19 September 2026.