Two men who murdered a millionaire and three generations of his family have been jailed for life.
The adults' bodies were found at sea, the boys were never found
Kenneth Regan, 55, of Wiltshire, and William Horncy, 52, of Dorset, were convicted at the Old Bailey on Friday.
Peter Rees, 39, of Hants, who was found guilty of murdering Amarjit Chohan, of west London, but cleared of killing four others, was also jailed for life.
The judge told Regan and Horncy they should never be released and Rees will have to serve at least 23 years.
The family disappeared from their home in Hounslow, in February 2003.
The men wanted to take over Mr Chohan's freight business and use it to import drugs to the UK.
Judge Sir Stephen Mitchell, passing sentence, told Horncy, of Adeline Road, Bournemouth, and Regan, of Forge Close, Wilton, near Salisbury, they were "highly dangerous men".
He said: "Your crimes are uniquely terrible.
"The cold-blooded murders of an eight-week-old baby and an 18-month-old toddler, not to mention the murders of their mother, father and grandmother, provide a chilling insight into the utterly perverted standards by which you have lived your lives.
"Your characters are as despicable as your crimes. Each of you is a practised, resourceful and manipulative liar."
The judge said the men were 'highly dangerous'
Rees, of Kings Close, Rowlands Castle, near Portsmouth, was also convicted of assisting an offender.
The bodies of Amarjit and Nancy Chohan and Mrs Chohan's mother Charanjit Kaur, 51, were found washed up off Bournemouth and the Isle of Wight on various dates in the months after they went missing.
Their two young sons Devinder and Ravinder have never been found.
When Mr Chohan's body was discovered a note was found in his sock pointed to convicted drug dealer Horncy as being his killer.
Police said they believed Mr Chohan had been held captive for several days before his death and when he realised he was going to be murdered he concealed the letter which was addressed to Horncy's father.
Det Ch Insp David Little said the crime was the worst he had ever dealt with, saying the family died purely because of "financial greed".
He told BBC News: "All of the officers involved in the case did a fantastic job, it spanned two and a half years and the conclusion proves the amount of work they put into it."
The murder trial, thought to be the longest involving the Met, cost more than £10m.