A father who murdered his teenage daughter by stabbing her in the heart during a play-fight will not have his sentence increased, judges have ruled.

Simon Vickers was jailed for life with a minimum term of 15 years in February for the murder of his 14-year-old daughter, Scarlett Vickers, at their home in Darlington on July 5 last year.

The Solicitor General sought to refer the 50-year-old's sentence to the Court of Appeal, with their lawyers arguing at a hearing on Thursday that it was 'unduly lenient'.

They believed that the sentence should be increased as it 'failed to adequately reflect the overall seriousness of the offending'.

Barristers for Vickers opposed the bid, arguing the sentence should remain the same.