A voluntary ban on smoking is being introduced in all public play areas across Sefton later.
The borough has received overwhelming support from residents.
Research shows that reducing children's exposure to cigarettes makes them less likely to smoke when they're older
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Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."
Business Secretary Greg Clark said talks with Peugeot's boss over a potential Vauxhall takeover were both "constructive and reassuring".