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- Emergency services were called to an incident between Watford Junction and Milton Keynes Central.
- Trains have been cancelled or delayed by up to 120 minutes
- Rail replacement busses have been introduced between Watford Junction, Tring and Milton Keynes central
- Major disruption is expected until 5.30pm
- The train operating companies affected are Avanti West Coast and London Northwestern Railway
- All services between Watford Junction and Milton Keynes have resumed.
- For our live blog for updates
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