About the data

Downloads

• All journeys (CSV): one row per directed journey with distance, climb, steepest section, status and date.
• All journeys (GeoJSON): the canonical route line per journey.
• Barrier register (CSV) and GeoJSON.

Units and meanings

• Distance to 10 m; run length to 5 m; climb to 1 m. Gradients as percent, with the 1:n ratio in brackets at first mention.
• Every gradient is a way average: the rise from one end of a mapped street section to the other, from 1 m Environment Agency LiDAR, divided by its length. A section that dips and rises can read flatter than it feels. Gradients are way averages from 1 m LiDAR, not spot measurements.
• "Climb" adds up the uphill way averages along the route. "Steepest section" is the way with the largest average, in the direction you travel.
• A gradient limit of 5% means every section's average rounds to 5% or less. The engine rounds to whole percents, so a section reading 5.4% can appear on a 5% route; the page names it when it does.

How routes are checked

• Computed, not checked: Computed by the engine. Nobody has read this yet. (preview only; never on the public site)
• Checked at the desk: Checked at the desk, not yet wheeled. Read against audit notes, street imagery and the venue's own information on the date shown.
• Wheeled end to end: Wheeled end to end on the date shown.
• Barrier on this route: There is a barrier on this route. Read the alternative below.
• Being re-checked: Someone has told us something may have changed here (the date shown). We are checking.
• Not open yet: This venue is not open or its entrance is not confirmed. (preview only; never on the public site)

Nothing is called verified without a dated visit. A desk check reads the engine's draft against audit notes and photos, the council's record, OpenStreetMap, dated street imagery, the AccessAble guide where one exists and the Nexus page for a Metro station.

Where the data comes from

Routes are computed by OpenRouteService (wheelchair profile) on map data © OpenStreetMap contributors, available under the Open Database Licence. Gradients come from the Environment Agency's LiDAR Composite DTM 2022 (1 m), used under the Open Government Licence v3. The engine was last run on 2026-11-10.

The licence for these downloads has not been chosen yet; until it is, the data is published for reading and sharing by link, and the OpenStreetMap share-alike terms apply to anything derived from the routes.