The mother of a three-year-old boy crushed to death by her boyfriend using an Audi car seat told him hours later: 'They know we are lying' after they blamed a phantom taxi, the Old Bailey heard today.
Stephen Waterson, 25, is accused of deliberately ramming his seat against Alfie Lamb because the boy would not stop crying after his mother Adrian Hoare allegedly forced him into the footwell.
Waterson, who is the adoptive son of former Tory cabinet minister Nigel Waterson, claims he has no idea how Alfie died, but insists it had nothing to do with the car seat.
He told emergency operators he had been driving by and stopped to help try and revive Alfie - the couple then claimed the little boy had been injured in a taxi which had driven off.
A message sent from Hoare to Waterson just hours after the incident at 8.07pm on February 2 of last year was read to the jury, which said: 'They know that we are lying.'
Stephen Waterson is accused of deliberately pushing his Audi's seat back against Alfie Lamb - and said hours later: 'They know we're lying' after claiming the three-year-old was injured by a taxi
Adrian Hoare and Stephen Waterson are on trial at the Old Bailey - but deny the manslaughter of the little boy
Duncan Atkinson, prosecuting, asked him today: 'Was it that 'Plan A' the first lie, was not working that prompted you to go to the hospital?
Nigel Waterson was born in Yorkshire and attended Leeds Grammar School.
In the 1992 General Election, he took his seat from the Liberal Democrats, and went on to successfully defend it in 1997, 2001 and 2005.
He served as Parliamentary Private Secretary to the Health Minister and to the Deputy Prime Minister (Michael Heseltine) during the Major government.
Nigel entered the Whips' Office in 1997. He later became Shadow Minister for Local Government and then for Trade & Industry.
In 2003, he was appointed Shadow Pensions Minister and also Shadow Minister for Older People.
Throughout his time in Government he campaigned on issues affecting older people - including scrapping the pension age.
He is currently a trustee of the International Longevity Centre, and a Council member of the Society of Pension Consultants.
He also has a role as Patron of the Eastbourne branch of the Multiple Sclerosis Society, as well as Patron of the local Abbeyfield Society
'Even before you had reached the hospital you did not know what lies she had told the police, you were trying to get her alone and away from the police.
Waterson answered: 'No-one was allowed in the room with Alfie, Alfie was with doctors. I did not know what lies she had told the police.'
Mr Atkinson said: 'You were trying to get her alone'
Waterson asked him: 'Is it a crime to be alone with your partner?'
He added: 'I have already admitted lying in the beginning, I have pleaded guilty to it, lies were told, I did not want to get anyone in trouble.'
His girlfriend Adrian Hoare, 23, was in the back seat with Alfie and Hoare said he looked upon the boy as his son.
Waterson told the Old Bailey he lied to police after the incident because he was worried that he would get in trouble because the driver of the car, Marcus Lamb, had been disqualified.
Two days after Alfie was injured Waterson went in search of a new car.
Mr Atkinson asked him: 'Why did you start looking for
