The prime minister is being urged to raise the case of a British woman and her fiancé who died from methanol poisoning in Vietnam when he meets the country's leader.
Greta Otteson, 33, and Arno Quinton, 36, were found dead on Boxing Day in Hoi An, Vietnam, after drinking toxic limoncello that was bought by Greta's parents as a gift.
Ann Davies, the family's MP, has written to Sir Keir Starmer ahead of his meeting with Tô Lâm, General Secretary of the Communist Party of Vietnam, in London, calling for the case to "receive the full attention and resources it deserves from the Vietnamese authorities".
The prime minister's office has been asked to comment.
Paul Otteson said he remained frustrated at what he saw as a a lack of action in relation to his daughter's death and urged Sir Keir "as a father" to raise the case.
