David Cameron says he wants to complete the job of "turning the country around" as the election officially gets under way and other leaders hit the campaign trail.
Co-pilot of crashed Germanwings jet, Andreas Lubitz, had treatment for suicidal tendencies before he gained his licence, investigators say.
British couple Peter and Jean Tarsey, both aged 77, have been found dead with bullet wounds in a village near Benidorm, Spanish police say.
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World champion Lewis Hamilton expects to sign a new Mercedes contract this week that could be worth more than £27m a year.