Latvian Vadims Ruskuls who sexually assaulted and murderer Pardeep Kaur have been jailed for life
Vadims Ruskuls, 25, who lived under a bridge, pounced on 30-year-old hotel housekeeper Pardeep Kaur on the morning of October 17 last year.
The brave mum-of-one desperately tried to fight back.
But her screams were drowned out by the sound of roaring traffic in Harlington, west London.
Mrs Kaur was reported missing after failing to turn up to the Sheraton Skyline Hotel near Heathrow Airport at 7am.
Mrs Kaur on her way home from work on Sunday October 16, the day before she went missing
But her body was not found until five days later on October 22 when it was discovered buried in the woods near the M4.
Ruskuls, who has previous convictions in Latvia for burglary and criminal damage, denied murder, but was convicted at the Old Bailey today.
An additional count of preventing the lawful burial of a body was left to lie on file.
Ruskuls, of no fixed address, will be deported after he is released.
Jailing Ruskuls, Judge Richard Marks QC, the Common Serjeant of London, said: "By a tragic consequence of events she found herself in the wrong place at the wrong time.
The 30-year-old hotel housekeeper captured on CCTV in the minutes before she was snatched
Get Quotes on Home Insurance
"In that quite by chance her route converged with yours near a bridge by the M4 motorway.
By a tragic consequence of events she found herself in the wrong place at the wrong time
Judge Richard Marks QC
"It is apparent from the state of undress in which her body was found that motive for this attack must have been sexual.
"Either in the course of, or immediately following you having sexually assaulted her, you killed her.
"This was a truly shocking and wicked offence of the utmost gravity.
"Anyone who could do what you did must be regarded as extremely dangerous.
Ruskuls denied murder, but was convicted at the Old Bailey today
"What a dreadful way for Pardeep Kaur – a decent, hardworking, young family woman – to die.
"I observe that even now you have not showed even one iota of remorse, thinking only of yourself in your desire to avoid responsibility for your appalling acts."
Mrs Kaur and her husband, Rachpal Singh, moved to the UK in 2011 and worked long hours to support their five-year-old daughter who lived with her grandparents in India.
To save money, Mrs Kaur would walk to work on the other side of the M4 from her home in Hayes – a journey of about 40 minutes.
The Judge said: "The little girl was a much loved child whom her parents were seeking to provide by coming to this country.
"They both worked six days a week and such was their industry that they saw little of each other, because she worked days and e worked nights.
"Nonetheless it is clear that they were an extremely devoted couple."
In a victim impact statement, her husband said: "I always think about what she must have gone through on that dark morning when she was killed."
PC Richard Lewis met Ruskuls in the hours after the attack on October 17 last year
Officers traced the route Mrs Kaur would have taken to work, and recovered CCTV which showed her and Ruskuls separately entering a walkway beneath Harlington Bridge at 6.33am.
About 25 minutes later, footage showed him dragging her body down the walkway, under the bridge and towards the wasteland where it was eventually found.
On October 22 police, including DCI Kenneth Berg, who was visiting from Norway, went back to the area of woodland on the Hayes side of the M4.
Crispin Aylett QC, prosecuting, said: "About 200 yards into the overground wasteland between the walkway and the motorway, with the road of the motorway traffic in his ears, Mr Berg noticed a human foot sticking out from beneath a sleeping bag which had, itself, been covered with branches.
"The body was that of Pardeep Kaur. Mrs Kaur's body was badly decomposed. The pathologist who conducted the post mortem examination has been unable to identify precisely how she died."
Mr Aylett said: "The defendant must have pounced on Pardeep Kaur at some point on the ramp.
Ruskuls, who lived under a bridge, will be deported after he is released
"He must then have sexually assaulted her, and then murdered her.
"There is some evidence that Mrs Kaur must have fought back – the day after the incident, it was noticed that the defendant had a number of scratches on his face.
"If she had cried out, however, her screams would have been drowned out by the sound of the early morning traffic."
In the early hours the next morning, Ruskuls was out on a nearby street behaving erratically, and tried to get into a house at about 1.30am.
Two officers, PC Lewis and PC Mackenzie, searched the area and found Ruskuls standing barefoot in the street, with scratches on his cheek and neck, acting "vacant".
Ruskuls gave them a false address six miles away in Hounslow, and they gave him a lift home in their police van.
A week after the body was found, Ruskuls was identified after PC Lewis was shown a CCTV clip of him walking on the morning of the murder.
Police told the defendant's mother they were looking for him, and he handed himself in on October 31.
His DNA matched samples on several items of Mrs Kaur's clothing, as well as a black socks found nearby.