It's one of the biggest cases of horse cruelty the RSPCA has ever dealt with. Today a horse trader has been jailed in Cardiff and banned from keeping horses after being convicted of causing unnecessary suffering. Thomas Tony Price and his family are thought to own thousands of horses.
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There will be a fresher feel with temperatures falling lower than on recent nights.
The accident between junction 24, Coldra, and 23A, Magor, has closed the eastbound carriageway.
Eloise Parry, 21, died after taking diet pills containing the poisonous Dinitrophenol (DNP).