They call the helpline are are often surprised that we aren't telling them to LTB, that we will talk about other scenarios.
Do you really think this poster does this job? It's one thing to say 'we support women in da relationships even if they're not considering leaving', it's another for a police poster to reassure women who choose to stay that they will be kept safe.
It's impossible to predict which men will escalate from emotional abuse to a sudden physical attack. You can't be sure an emotionally abusive man won't end up killing his partner.
Cf Lance Hart, who killed his wife and DD, had not been physically abusive according to his family - he didn't need to be as they were scared of him.
Cf Oscar Pistorius.
Research in Australia found that (iirc) 40% of women who were murdered by their partner/ex had not previously experienced physical abuse from them.
And you certainly cannot guarantee the police could be there fast enough to prevent a physical attack from an already violent man.
While police and dv charities absolutely work with women they will never leave, a police poster promising to keep women safe is dangerous.