The Supreme Court will rule today on whether doctors should have been allowed to withhold treatment from a "gravely ill" man.
Liverpool guitarist David James, who was in his late 60s, died 10 months ago, shortly after the Court of Appeal decided that withdrawal of treatment would be in his best interests.
His widow May has asked the Supreme Court to overrule that decision.
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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.