A former commercial airline pilot who disabled the passenger airbag of his car before deliberately crashing in to a tree to kill his wife, has been given a life sentence.
The court was told that in the moments before the car struck, Iain Lawrence also unclipped his wife Sally's seat belt.
The 53-year-old was told he will serve at least 24 years for the murder.
Prosecutors said Lawrence adopted the brace position in the crash as Mrs Lawrence died almost instantly.
During the trial, jurors heard that Lawrence was struggling to cope with the break-up of his 12-year marriage.
The couple were going through an acrimonious divorce and had "locked horns" over the settlement the night before the crash.
They were still living together at their matrimonial home at the time of the crash, although leading separate lives.
The court heard that Lawrence had refused to leave the house as he had wanted the couple, who have a son together, to reconcile.
Mrs Lawrence, who was seeing another man and had instigated divorce proceedings months earlier, had told friends she feared her "calm and cold" husband would try to kill her.
Jurors heard that he feigned unconsciousness behind the wheel following the crash.
Calling it a "vile crime", Mr Justice Leggatt, who sentenced Lawrence, said the defendant must have plotted the murder "over days if not weeks in all its malevolent detail" and then executed it with "ruthless efficiency".
He told Lawrence:
Following the sentencing, Mrs Lawrence's sister, Catherine Kudhail, said: