During the course of the trial, jurors heard evidence from Mrs Groce's son Lee Lawrence - aged 11 at the time of the shooting - who watched his mother being shot by police.
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Police were called to Kilburn High Road at 5.20pm after reports of a shooting.
In just 24 hours the offer was retweeted more than a thousand times on Twitter.
What a year it's been full of ups and down, turmoil and change and it seems events here in London have got the entire nation talking.