Thameslink cancels 42 trains after overhead line fault in Streatham
Passengers face delays until at least 19:00 as engineers work to restore power between Balham and Norwood Junction
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Thameslink suspended all services between Balham and Norwood Junction at 14:35 on 7 August 2026 after an overhead line fault near Streatham Hill station. The disruption affects 18 stations across south and central London, including London Bridge, Blackfriars, and Farringdon.
Network Rail confirmed the fault occurred on the Up Fast line between Streatham Hill and Balham. Engineers arrived at 15:10 and expect repairs to continue until at least 19:00. No trains will run on the affected section until power is restored.
Southern Railway replaces late-night trains with buses on Barnham to Chichester route
Engineering work will close overnight lines from 27 to 31 July, with replacement buses operating between key stations.
Which stations are closed
The following stations have no Thameslink service: Balham, Streatham Hill, Streatham, Mitcham Eastfields, Mitcham Junction, Hackbridge, Carshalton, Sutton, West Sutton, Cheam, Norbury, Thornton Heath, Selhurst, East Croydon, South Croydon, Purley Oaks, Riddlesdown, and Upper Warlingham.
London Bridge, Blackfriars, City Thameslink, and Farrington remain open but are operating reduced services. Thameslink has cancelled 42 trains since the disruption began, as reported by This Is Local London on 7 August 2026.
Southeastern diverts Charing Cross trains to Victoria on 8 August
Seven stations in Lewisham and Bexley closed for weekend engineering works with replacement buses
What passengers should do
Thameslink advised passengers to use Southern Railway services between London Victoria and East Croydon, which are running normally. London Underground services on the Northern and Victoria lines are also unaffected.
Transport for London has deployed additional buses on routes 50, 159, and 250 to connect affected stations. Passengers with advance tickets can claim refunds through Thameslink’s website or at any staffed station.
Next steps
Network Rail has not provided an updated repair timeline beyond 19:00. Thameslink will issue further updates via its website and social media channels. Passengers are advised to check live departure boards before travelling.
Questions this report answers
+Which stations are closed because of the Thameslink disruption?
Eighteen stations between Balham and Norwood Junction have no Thameslink service, including Streatham Hill, Mitcham Eastfields, and East Croydon. London Bridge and Blackfriars remain open but with reduced services. Engineers are working to restore power.
+How long will the Thameslink disruption last?
Network Rail expects repairs to continue until at least 19:00 on 7 August 2026. No trains will run on the affected section until the overhead line fault near Streatham Hill is fixed. Passengers should check for updates before travelling.
+What should passengers do if their train is cancelled?
Passengers can use Southern Railway services between London Victoria and East Croydon, or London Underground on the Northern and Victoria lines. Additional buses are running on routes 50, 159, and 250. Refunds are available for advance tickets.
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Southern Railway replaces late-night trains with buses on Barnham to Chichester route
Southeastern diverts Charing Cross trains to Victoria on 8 August
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