Fiona Spargo-Mabbs gave her son a kiss and a hug, and told him she loved him. Daniel responded by saying "I promise I won't die" before leaving the house and heading to a rave where he collapsed.
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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.
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