Detective Superintendent Phil Owen of Greater Manchester Police said he is "very pleased" with the results of the Clare's Law scheme.
Speaking to Daybreak he said: "It's really important that we do learn those lessons.
"The domestic violence disclosure scheme I think is real evidence that we've listened to Clare's father, we've listened too various different organisations and from September last year we've given disclosure in over 50 cases."
More top news
Donald Trump made a number of "Day One" promises during the US election campaign. So what were they?
The white sheepdog puppies were pulled out by rescuer workers after surviving five days under tons of snow and rubble.
The Defence Secretary Michael Fallon repeatedly refused to confirm details of the test when he was summoned to the Commons.