Road Closures & Traffic Restrictions
Residual Marathon-related restrictions (central, east, southeast London):
Road network across Westminster, Embankment, Tower Bridge, Canary Wharf, and Greenwich affected by phased reopening and post-event clear-down following the London Marathon.
A40 Westway corridor (west / central London):
Full closure between Westway Roundabout and Marylebone Flyover continuing through late April
→ High-impact disruption on a primary inbound/outbound artery into central London
A40 corridor (ongoing programme):
Additional partial westbound weekend closures extending into summer
Major Events Impacting Mobility
Post-event congestion zones (London Marathon footprint):
Central London — The Mall, Westminster, St James’s
East London — Canary Wharf, Tower Bridge approaches
Southeast London — Greenwich, Blackheath
Elevated pedestrian density and staggered dispersal continue to affect surrounding transport nodes and arterial routes
Infrastructure & Utility Works
Strategic road network works:
A23 Streatham Hill — long-term works affecting traffic flow and bus operations (ongoing through 2027)
Gallows Corner (north-east London) — junction improvement works impacting vehicle movement and routing
Piccadilly line upgrade programme:
Ongoing engineering works linked to rolling stock and signalling upgrades, with associated service adjustments
Rail & Underground Disruptions
Industrial action aftermath:
Residual disruption from recent Underground strikes (21–24 April) with uneven service normalisation across lines
Planned Underground constraints:
Piccadilly line:
Ongoing closures between Wood Green – Cockfosters and Rayners Lane – Uxbridge
Northern line (Bank branch):
Weeknight early closures (post-22:00) between Camden Town and Kennington
Metropolitan line:
Planned closure between Harrow-on-the-Hill and outer branches (Amersham, Chesham, Watford) within the upcoming window
Rail engineering works:
Thameslink and associated routes subject to periodic weekend engineering works affecting north–south cross-London flows
High-Density Zones & Congestion Areas
Central London core (Zone 1):
Westminster, Victoria, Waterloo, London Bridge
→ Elevated passenger volumes driven by combined event recovery and Underground disruption
East London corridors:
Stratford, Canary Wharf, Docklands
→ Increased reliance on DLR, Elizabeth line, and surface transport
Key interchange stations:
King’s Cross St Pancras, London Bridge, Victoria
→ High passenger throughput linked to modal shift from Underground constraints
Alternative transport corridors:
Bus network and Overground routes experiencing increased load
Network Pressure Outlook
Concurrent pressure drivers across the network:
Large-scale event recovery (London Marathon)
Strategic road closures (A40 corridor)
Ongoing TfL infrastructure programmes
Residual effects of recent industrial action
Resulting conditions:
Reduced road fluidity across central and westbound corridors
Localised access constraints in central and east London
Reduced Underground capacity on key lines and sections
Increased demand across rail, bus, and alternative transport networks
