Three men have been found guilty at the Old Bailey of murdering young mother Sabrina Moss who was gunned down as she celebrated her 24th birthday.
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Inspectors found a culture of bullying and major problems with poor ambulance response times at the trust, which is the biggest in the UK.
More than a tenth of the Piccadilly Line train fleet is out of action because of emergency repairs to damaged wheels.
Rows of students stood and turned their backs before filing out of the lecture theatre.