Ben Hope and Jason Richards, the killers of Cardiff A-Level student Aamir Siddiqi, have each received a life sentence in jail.
The judge at Swansea Crown Court told them they must each serve a minimum term of 40 years.
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The teenager, who cannot be named for legal reasons, appeared in court to plead guilty to perverting the course of justice.
Farmer Gareth Wyn Jones is hoping for a festive online hit with footage of sheepdog Cap rounding up sheep.
It is expected to remain wet and windy for the rest of today, overnight and tomorrow. Conditions improving on Christmas Eve