A Costco store manager, Roger Cooper (41), and his brother who is a former soldier, David Cooper (39), were found guilty at Birmingham Crown Court of murdering a marketing manager, Sameena Imam (34).
It is said that the Coopers has allegedly smothered Imam with chloroform and her body was found buried in an allotment, in Leicester.
The judge said that the pair must serve at least 30 years in jail for this murder.
Judge Patrick Thomas QC told the Cooper brothers, “The use of a poison in a case such as this demonstrates a cold-blooded intention to kill, regardless of the consequences. You worked together, hand in glove, in planning and carrying out the murder of a joyful and bubbly young woman, brutally betrayed by a man she loved and his brother.”