Over a third of children in Manchester, Middlesbrough, Belfast and Glasgow are thought to live in poverty, according to data.
End Child Poverty also pointed to six London boroughs, including Tower Hamlets and Westminster, as being rated in the 20 worst areas for poverty.
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Drivers in Scotland will be banned from smoking in cars where children are present from this week.
Motorists who cause death by speeding, street racing or while on a mobile phone are among those who could be handed tougher punishments.
Cubans have lined the streets since Thursday as the ashes of the Communist leader were driven on a 600-mile journey across the island.