There are delays of up to 40 minutes on CrossCountry services between Birmingham New Street and Bath Spa and First Great Western Services between Cheltenham and Bath Spa.
It's all due to a signalling problem at Bristol Parkway. Disruption is expected to last until around 9am.
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Showers will continue through the night with sleet in some areas. Gales will affect the far west at times, especially in coastal areas.
Showers will continue through the night, with possible hail, especially over the hills. Light winds will affect the east of the region.