At Reading Crown Court Ide Faysal, aged 19, of Poplar Place, Hayes, received a prison term of 15 years and Abidiqader Shidane, aged 18, of Crest Gardens, Ruislip, was jailed for 12 years and six months.
On 2 July, 2017, Faysal and Shidane robbed Samuel O’Brien, aged 31, in St Giles Close, Reading, assaulting him in the process and causing him a head injury.
Mr O’Brien then fled from the pair, and ran into a block of flats in Southampton Street.
It is believed that he then tried to leave the flats through a second floor window, but fell in the process, causing him to sustain fatal injuries.
Faysal and Shidane also robbed a 21-year-old man on 14 May, while Faysal robbed a 41-year-old man on June 25, in Reading town centre. In both cases, phones and bank cards were stolen from the victims.
At Reading Crown Court on 18 January, following a three-week trial, Faysal was found guilty of three counts of robbery and one count of manslaughter, while Shidane was found guilty of one count of manslaughter.
Shidane pleaded guilty to two counts of robbery.
Investigating officer Detective Constable Nathan Lampard, of Force CID at Reading police station, said: “The offenders travelled to Reading from London to commit violent robberies, and, as an indirect result of their actions, Samuel O’Brien tragically died.
“While the sentencing of Faysal and Shidane will not lessen Mr O’Brien’s family’s sense of loss, we hope it brings some small comfort to them that those responsible have received lengthy jail terms.
“The successful outcome of this complex investigation shows that Thames Valley Police is committed to bringing those who carry out violent offences to justice.”
The family of Samuel O'Brien have issued this tribute.
“Sam was an extremely popular man, a much loved son and a brother, with everything to live for, and a devoted father to his seven year old son, who is devastated.
“As a family we are united in grief, his loss has deeply affected us all. He had many things planned, and had a very bright future ahead of him before his life was so tragically cut short.
“Sam is deeply missed by all of his family and friends and a light has gone out of our lives.
“We have finally got justice for Sam and we would like to thank the police, CPS and barristers for their determination and hard work.”