Waterloo & City line: live status and updates
Waterloo & CityStatus: Good Service
Is the Waterloo & City line running today?
Yes, as of the evening of 28 April 2026, the Waterloo & City line is running with good service.
This page shows the latest Waterloo & City line status, plus reliability trends based on observed service history. Set up free alerts on the homepage to get emailed when the status changes.
Waterloo & City Line Performance Summary
Last 24 hours
In the last 24 hours (), the Waterloo & City line averaged 100.0% good service - perfect. That was noticeably above the weekly average of 56.4%.
Last 7 days
In the week ending , the Waterloo & City line sat at 56.4% reliability across all hours - well below par. During peak hours, reliability was slightly higher at 62.7%. Over the past 90 days, Sundays tend to perform best at 100.0%, and Thursdays worst at 93.3%.
Last 30 days
Taking the 30-day window ending , the Waterloo & City line came in at 87.3% - generally reliable, and ranked 6th out of 20, in the upper half. During peak hours, reliability came in at 89.5%, edging slightly above the all-hours figure.
Last year
Over the last year ( to ), the Waterloo & City line has ranked 2nd out of 20 lines with 95.9% reliability, near the top of the network.
How we calculate these figures Get free Waterloo & City line delay alerts →Waterloo & City Line Performance and Reliability Data
Detailed charts showing how the Waterloo & City line has performed over different time periods. All reliability figures are time-weighted and exclude normal overnight closures.
Waterloo & City line service status: last 24 hours
Every status change on the Waterloo & City line in the past 24 hours, from Good Service through to suspensions and closures.
Waterloo & City line status distribution: last 7 days
How operational time was split between service statuses over the past week. This shows status distribution, not the reliability figure (which excludes planned closures and overnight closures).
Waterloo & City line monthly reliability trend
Month-by-month reliability percentage showing long-term performance patterns and seasonal trends.
Waterloo & City line reliability by hour of day
Average reliability for each hour of the day, based on 60 days of monitoring. Helps identify the best and worst travel times.
Waterloo & City line reliability by day of week
Over the last 90 days, the Waterloo & City line has performed best on Sundays (100%) and worst on Thursdays (93.3%).
Waterloo & City line typical station busyness
How busy stations on the Waterloo & City line typically are throughout the day, based on TfL crowding data. 100% = the single busiest hour of the week.
Recent status changes
- Good Service —
- Service Closed —
- Good Service —
- Service Closed —
- Good Service —
- Planned Closure —
- Good Service —
How we calculate reliability
- Time-weighted: Reliability is the percentage of operational time with “Good Service”, not a count of incidents. A 23-hour good day with a 1-hour delay scores ~96%, not 50%.
- Operational hours only: Normal overnight closures (“Service Closed”) and planned closures are excluded so they don’t deflate scores.
- Status change tracking: We record every status change from the TfL API (polled every 60 seconds), then calculate the duration of each status period.
- Peak hours: Peak-hour figures cover weekday mornings (07:00-09:30) and evenings (16:30-19:00) only. All-hours figures include the full operational day.
- Refresh frequency: Statistics on this page are recalculated every 5 minutes. Day-of-week patterns are based on the last 90 days of data.
- Data source: All data comes from the Transport for London Unified API.
- New lines: DLR, Elizabeth line, and Tram were recently added to our monitoring. Annual statistics for these lines will become available once a full year of data has been collected.
Need accessibility info? Check step-free access alerts for live lift status at stations on this line.
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See what happens to journey times if the Waterloo & City goes down - try our interactive travel time map.
About the Waterloo & City line
The Waterloo & City line is the Tube's little commuter tunnel, just two stops between Waterloo and Bank. It's great when it's open, but it's generally weekday-only, and closures can be easy to miss if you don't ride it often. Check today's status before you head out.