Route U4
Uxbridge ↔ Prologis Park
Roam Intelligence
LIVE›Good service — buses rolling through as normal. Nothing to plan around right now.
Live Departures
No buses due right now
Every London bus is wheelchair-accessible with a low floor and ramp. Refreshes every 15s.
All Stops
Crowd Forecast
Forecast — based on rush hour patterns, local events and live status. Not a live count.
Popular Journeys
Uxbridge to Prologis Park
Uxbridge → Prologis Park
End to end — the full run of the route in one bus.
Uxbridge to Hayes & Harlington
Uxbridge → Hayes & Harlington
A one-seat ride to the route's main interchange.
Hayes & Harlington to Prologis Park
Hayes & Harlington → Prologis Park
Pick it up at the interchange and ride it to the end.
What's Nearby
Nothing to show here right now.
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Departure reminders
Best stops, what's nearby & how it connects — just ask