The force continues to co-operate fully with these independent investigations, none of which have reached their conclusion.

Assistant Chief Constable Matt Jukes said: “Tackling violent crime in all its forms is a priority for South Wales Police and by working with other organisations we are committed to reducing domestic abuse, as well as ensuring victims have the confidence to report incidents to the police.

“We recognise the terrible impact domestic abuse has on victims and because of this we take our responsibility to get it right very seriously. This is why we have introduced a range of measures to improve training and to ensure that incidents are properly managed and thoroughly investigated.

“There are currently cases which have been voluntarily referred by South Wales Police to the Independent Police Complaints Commission for investigation.

“The force continues to co-operate fully with these independent investigations, none of which have reached their conclusion. Therefore it would be wrong to pre-judge any findings, although we recognise that these matters are of serious public concern and so were passed to the IPCC.”