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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Firearms officer Martin Finney was awarded the George Medal, Britain's second highest civilian decoration.
Members of the RMT union who work on the Central Line will walk out at 9pm on Wednesday.
Southeastern was hit after a freight train derailed causing travel chaos for hundreds of thousands of passengers.