An inquest is set to resume into the death of multi-millionairess Eva Rausing.

The 48-year-old was found dead in July at the five-storey west London home she shared with her husband Hans, heir to the Tetra Pak fortune and one of Britain's richest men.

Police discovered the mother-of-four's body in an advanced state of decomposition after they arrested her husband on suspicion of driving under the influence of alcohol or drugs on July 9.

Mr Rausing was given two suspended sentences in August after he admitted preventing the lawful and decent burial of his wife's body. She was found in a fly-filled room hidden under a pile of clothing and bin bags which had been taped together, a court has heard.

A post-mortem examination established that she died on May 7 and had drugs in her system, including cocaine. The couple had fought a public battle against addiction to drugs.

In 2008 police launched an investigation after Mrs Rausing was caught with drugs as she tried to enter the US Embassy in London for a function.

Subsequent searches of her car and the couple's £5 million Georgian townhouse uncovered massive quantities of class A drugs.

Mr and Mrs Rausing faced drug charges but were given conditional cautions instead, meaning the hearings did not go ahead.

Mr Rausing's parents and siblings said then they were supporting the pair as they fought to overcome drug addiction.

The inquest into Mrs Rausing's death is due to take place at Westminster Coroner's Court in London on Friday.