Imogen Cauthery was involved in a collision with a driver who was using a mobile phone when she was just nine years old, leaving her with a permanent brain injury.
She told ITV News that how she thinks drivers have a responsibility to always pay attention behind the wheel.
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Temperatures will reach around 28 Celsius (82F) at their highest.
A minute's silence will be observed at 11am on Thursday in remembrance of those who lost their lives in the Manchester Arena attack.
New research has found those who consumed two cups had a 35% reduced risk, and for those who drank five cups, the risk halved.