How reliable is the Waterloo & City line?

Over the past 30 days, the Waterloo & City line averaged 98.3% good service, ranked 2nd out of 20 lines. Over the past 7 days it was 96.1%. Reliability is measured as the percentage of operational time (excluding closures) with Good Service, based on TfL data monitored at 60-second intervals.

Are there any delays on the Waterloo & City line? Live status and updates

Status: Planned Closure

Waterloo & City line: service operates 06:00 until 00:30, Monday to Friday only. There is no service on Saturdays, Sundays and on bank/public holidays.

Last updated: 19:43 — 14 March 2026

Is the Waterloo & City line running today?

No, as of the evening of 14 March 2026, there is a planned closure on the Waterloo & City line.

Details: Waterloo & City line: service operates 06:00 until 00:30, Monday to Friday only. There is no service on Saturdays, Sundays and on bank/public holidays.

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.

Live status for all lines Compare all lines Station closures on the Waterloo & City line

Waterloo & City Line Performance Summary

Last 24 hours

In the last 24 hours (14 March 2026), the Waterloo & City line averaged 100.0% good service - perfect. That was broadly in line with the past week.

Last 7 days

In the week ending 13 March 2026, the Waterloo & City line sat at 96.1% reliability across all hours - excellent. During peak hours, reliability dropped noticeably to 89.8%.

Last 30 days

Taking the 30-day window ending 13 March 2026, the Waterloo & City line came in at 98.3% - impressive, and ranked 2nd out of 20, near the top of the network. During peak hours, reliability was broadly similar at 97.4%.

Last year

Over the last year (14 Mar 2025 to 14 Mar 2026), the Waterloo & City line has ranked 2nd out of 20 lines with 96.1% reliability, near the top of the network.

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Reliability summary

Last 24 hours

100% good service

Last 7 days

96.1% good service

Last 30 days

98.3% good service

Network ranking (30 days)

2nd of 20 lines

Peak hours (30 days)

97.4% good service

Peak ranking (30 days)

4th of 20 lines

Reliability is the percentage of operational time (excluding normal closures) that the line displayed “Good Service”. Peak hours: weekday mornings (07:00–09:30) and evenings (16:30–19:00).

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 Fridays (96.8%).

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

Planned Closure — 14 Mar, 04:15
Service Closed — 14 Mar, 00:30
Good Service — 13 Mar, 18:01
Minor Delays — 13 Mar, 16:35
Good Service — 13 Mar, 06:01
Service Closed — 13 Mar, 00:29
Good Service — 12 Mar, 20:14

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.

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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.