Mohammed Shah Subhani, who was known as Shah, disappeared in May 2019 in the Derby Road area.
His remains were eventually found in a rural woodland near Beaconsfield in December of the same year.
28 year old Amraj Poonia will serve a minimum of 25 years which includes 7 and a half years for perverting the course of justice.
26 year old Raneel Poonia has been sentenced to seven years having been found guilty of perverting the course of justice.
He was found not guilty of murder or manslaughter.
23 year old Mohanad Riad has been sentenced to 14 months for perverting the course of justice.
He will serve an additional 24 months for drugs and driving offences.
27 year old Mahamud Ismail was found guilty of perverting the course of justice and sentenced to five-and-a-half years.