The fact that the UK police receive one phonecall every minute about DV suggests DV is rampant IMO.
In one area where I used to live I know for a fact that in a cul-de-sac of 18 premises (8 of which contained single households and 10 of which contained couples) there was violence in 7 of those 10 relationships.
I am pretty sure that's not representative of the UK as whole though, thank goodness.
The Home Office Study into DV, on which the 1 in 4 figure commonly put about comes from, says this about incidences recorded in one year (so much better at hinting at a true figure than say lifetime occurence):
WOMEN
The BCS estimated that there were 12.9 million incidents of domestic violence (non-sexual threats or force) against women in the year prior to interview. If the definition of domestic violence is limited to non-sexual force, then there were 8.3 million incidents against women (Table 2.5).
The BCS estimates that there were 190,000 incidents of serious sexual assault against women. Among these there were an estimated 80,000 incidents of rape (using the 1994 definition and including attempts). There were 450,000 incidents of less serious sexual assault affecting nearly 300,000 women. Well over a million women reported experiencing stalking behaviour.
And to give a comparison to male victims:
Men
The BCS estimates that there were 2.5 million incidents of non-sexual domestic violence against men of the form of either threats of force or use of force, and 2.2 million when the definition is restricted to force (or a death threat). Almost 900,000 men were affected by stalking. The number of sexual assaults against men was too small to analyse reliably beyond prevalence rates.
The UK Census states that in our population of 58,789,194 people, there are 8,975,623 married households and 1,969,156 co-habiting households. There are 7,395,015 single households and 2,373,372 lone parent households. I do not know how many of those single/lone parent households are in relationships, but for the sake of argument let's say half (probably less than that as many will be pensioners). Add all those together and we could project that the total number of people in intimate relationships amounts to 13, 318,171, which we'll round up to 13.5 million.
The BCS report states The median number of incidents experienced by victims was four (for men it was two). So if we divide the 12.9 million incidents by 4 as a rough guide to allowing for repeat offenders, we are left with maybe 3.2 million. So, as this is over a year and so there is a much lesser risk of the men having multiple victims, let's say 3 million men committed a recorded act of violence against a woman in one year.
The UK has a roughly 50/50 male/female ratio, so if there are 42,525,596 people between 16 and 75 in the UK, about 21,262,798 will be male.
So this would give you about 15% of men who are violent.
This does not include any incidents of emotional abuse, which IMO can be far more damaging and would possibly double that figure.
My guess? About 30%
There are 4x as many women killed by their partners than men in a one-year period. That's the figure I can't escape from.