Mei Fan's killer launches appeal

Mei Fan was found dead in her Miramar home in November 2013.

A Wellington man serving a life sentence for brutally murdering his estranged wife is appealing both his conviction and sentence.

Michael Preston was last year sentenced for Mei Fan's murder.

She was found dead in her Miramar home in November 2013.

Michael Preston was last year sentenced for Mei Fan's murder. Photo / File