Olivia Malone was cycling to college one day when she was knocked off her bicycle by Mr Thomson who was driving while speaking on his mobile phone.Olivia was thrown over the handle bars and four of her teeth were knocked out.She also broke her arm in the fall.A gentleman, Mr Robertson, who had been diagnosed as suffering from a weak heart was waiting at a nearby bus stop and witnessed the accident.Sadly, as a result of his shock he suffered a heart attack and spent three weeks in intensive care.Coincidentally, Olivia's mother, Julie Malone, was in the car behind Mr Thomson and was shocked to see her injured daughter lying in the road after seeing her at breakfast that morning.As a result she was unable to sleep and was absent from work for four months.

Discuss the extent of Mr Thomson's liability in this situation.