A pensioner charged with causing the death of a five-month-old has been found not guilty by reason of insanity because of her undiagnosed dementia.
Shelagh Robertson, 75, was on trial accused of causing death by careless driving of Louis Thorold in a fatal collision when an oncoming van went on to the pavement and hit his pushchair and his mother, Rachael Thorold.
The jurors found that Ms Robertson's dementia, which had gone undetected and untreated during the Covid pandemic, had affected her driving.
In a statement outside court today, Louis's parents said they 'must now look forward' and make sure his legacy lives on through their campaign to make roads safer for children.
Cambridge Crown Court heard Ms Robertson was driving home after shopping in Tesco in Waterbeach, Cambridgeshire on January 22, 2021 when she drove into the path of an oncoming van.
The collision with the van forced it on to the pavement where it hit and killed five month-old Louis Thorold and sent his mother, Rachael Thorold, flying into the air leaving her with serious injuries.
The jury was shown dashcam footage from the van, which showed the driver swerving to avoid hitting Robertson's Mazda after it suddenly made a turn at a junction.
The van, which had been travelling below the speed limit, then hit Mrs Thorold and the pram Louis was in, seriously hurting her and killing the baby.
Shelagh Robertson (pictured outside Cambridge Crown Court today), 75, was found not guilty by reason of insanity of causing the death of five-month-old Louis Thorold
Louis was pronounced dead at Addenbrooke's Hospital shortly after the crash on January 22, 2021 while Racheal was left with life-changing injuries.
Judge Mark Bishop told jurors that to return a special verdict of not guilty by reason of insanity they must be satisfied, on the balance of probabilities, Robertson had dementia at the time and either did not know what she was doing or did not know that what she was doing was wrong.
He said that this 'doesn't include a momentary failure to concentrate'.
The defendant, who sat beside her solicitor and a family member in the well of the court, used a hearing loop to listen to the jury foreperson and appeared expressionless as the verdict was returned after the jury deliberated for just over seven hours.
Louis's parents Chris and Rachael Thorold, who sat in the public gallery, looked down at the floor, with Mr Thorold shaking his head.
Five month-old baby Louis Thorold pictured with his mother Rachael hours before he was killed when a van went on to the pavement and collided with his pushchair
He said in a statement outside court with his wide stood beside him:
'Louis Thorold was the sweetest, happiest, joyful, and most beautiful baby,' he said.
'He was perfectly ours. He was our lives, he still is. We love, adore, and cherish him.
'Every moment we had with Louis was so special. We loved every single second. Louis knew only love and cuddles before he was killed by Shelagh Robertson.
'Louis' future and all his potential stolen, a life sentence for us, his family, our community, and everyone who hears this story.'
He said that Louis' legacy will live on through a road safety foundation set up in his name.
'We must now look forward,' he said.
'Louis would not want us to be sad or to give up. Louis will live on. His legacy will be that one day no-one will have to deal with the death of a child on Britain's roads.
'The Louis Thorold foundation has already achieved so much, but this is just the start. Our message is simple, no child should die on Britain's roads.
'The technology systems and approaches exist to eliminate all road deaths. But they require leadership and courage from those we elect to make a difference.'
Louis's parents Chris and Rachael Thorold (pictured outside court today) said they must 'now look forward' after the verdict was announced
James Leonard, defending, said in his closing speech that it was 'obvious' Robertson's driving 'fell below the standard of a reasonable and competent driver'.
But he said that Robertson was 'ill-equipped to negotiate' the junction due to her dementia and she was unaware of this as she was undiagnosed at the time.
Prosecutor David Matthew said in his closing speech that he did not doubt that Ms Robertson had 'a form of dementia' in January 2021 but questioned how bad it was at this time.
Adam Zeman, professor of cognitive of behavioural neurology at the University of Exeter, had presented a report on Ms Robertson to the jury.
He said she had 'dementia caused most probably by Alzheimer's disease in a slightly atypical presentation.'
Rachael Thorold was seriously injured in the collision in January 2021 when she went flying into the air
Prof Zeman added Ms Robertson would have been at 'high risk of becoming confused at that junction and one possible outcome of the confusion would be to look the wrong way.'
He added: 'It's a difficult junction for the average healthy driver.'
Prof Zeman said: 'Some forms of dementia are diagnosed relatively late as the features are rather subtle.
James Leonard, defending, said that Robertson was 'ill-equipped to negotiate' the junction of the A10 and Car Dyke Road in Waterbeach, Cambridgeshire (pictured) due to her dementia
'The time her problems were getting more severe coincided with the pandemic so there would have been fewer opportunities for face-to-face contact than there normally would be.'
Jurors were shown an MRI scan of the defendant's brain, which Prof Zeman said showed 'shrinkage' of a part of the brain associated with memory and language.
He said that if he had a patient with the 'difficulties' he saw in Ms Robertson he would 'advise them immediately not to drive'.
Detective Sergeant Mark Dollard, from the road policing unit, said: 'This was an extremely tragic and sad incident and our deepest condolences go out to Louis' family.
'We carried out a thorough and exhaustive inquiry, however, regardless of the verdict nothing will ever bring Louis back and his family will have to live with that for the rest of their lives.
'It is however, a stark reminder of how important it is for anyone who gets behind the wheel of a vehicle to be competent and capable of driving safely.
'I would urge anyone who is concerned about a family member or friend and their ability to drive to speak up, discuss your concerns with your loved one or alternatively speak to your GP who can submit their concerns to the DVLA.'