Trains running in and out of London Paddington have been disrupted this afternoon by a problem with line-side equipment between the station and Ealing Broadway.
Passengers have been experiencing delays of up to 15 minutes.
London-bound lines have re-opened and it is hoped a normal service will resume soon.
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The victim of an assault in Cippenham was flown to hospital by air ambulance this afternoon.
A rapid response vehicle, an ambulance officer, an air ambulance and an ambulance crew were all called to an address in Earls Lane at 2.10pm.