Joss Stone tells the court that she didn't ever use the burglar alarm on her house or lock her door. She says no one in Devon does.
But she says she now uses an alarm, and locks the doors and windows.
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Detectives in Westminster are investigating after the man was discovered on the Route 189 bus in Marylebone shortly after midnight.
The murderer was shaking and appeared to be gasping for air for around 13 minutes before dying.
The positive results come after Chancellor Philip Hammond admitted the government is prepared to sell its stake at a loss to the taxpayer.