Three judges at London’s Court of Appeal safely upheld the original Old Bailey conviction after Baker claimed he had nothing to do with his wife’s disappearance.
His estranged wife, Tina, 41, was last seen going to feed the animals at a farm in Chobham, which she shared with her husband.
Baker’s first wife, Gillian Hopkins, told police of threats he made before their divorce. She claimed he said he would make her “disappear permanently” by cutting her up and feeding her to the pigs.
Police carried out an extensive search for the missing woman, checking pig swill and manure, but found no trace of her.
In rejecting Martin Baker’s appeal, the court was “quite satisfied” that none of Baker’s potential grounds of appeal, whether taken singularly or together, “make it arguable that this conviction was unsafe”.