Calls for Dewani to be questioned publicly
The British businessman has never been questioned in public and under oath about what happened in 2010.
A coroner is to set out the terms of the inquest in the UK next week and Anni Dewani's family say the businessman must be called as a witness.
The British businessman has never been questioned in public and under oath about what happened in November 2010 when his wife was shot dead in a township near Cape Town.
Her father Vinod Hindocha thinks a British inquest is the final chance to find out what really happened and says it's their "last shot at justice".
They are demanding coroner Andrew Walker name Dewani as a witness when he sets out the scope of the inquest on Wednesday.
However under British guidelines a witness is not obliged to answer questions which may incriminate them.
The victim's family have decided against a private prosecution.
Almost a year ago the Western Cape High Court acquitted Dewani after South African prosecutors failed to build a strong case against him.
Hindocha said last month they didn't get justice in South Africa, but insisted there were other options.
"There are many options actually. A private prosecutor in the UK, we are looking into it."
Three South African men were jailed for their role in the murder.
One has since died in prison.
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