There are currently 49 criminals serving whole life terms in English prisons, and David Cameron has vowed to ensure that "life means life" for the worst offences.
Those serving full life terms include Jamie Reynolds, who pleaded guilty to the murder of Shropshire teenager Georgia Williams last year.
Mark Bridger, who was jailed for killing five-year-old April Jones, is also serving a whole life sentence.
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Some parts of the UK will be dry and bright on Sunday but on the coast there will be wintry showers and temperatures will remain low.
The live stage version of Peter Kay's Phoenix Nights has reportedly been cancelled after actor Ted Robbins collapsed on opening night.
The much-loved local character, who had lived on the city's streets for decades, died in hospital this week after falling ill.