That's very interesting, what's the legal basis for prohibiting an individual from forming intimate/domestic relationships?
And what are the practicalities for his potential partners?
Are MI5 going to swoop in and ... warn the women off? Warn the man off? Detain him? How exactly does this protect women, given that abuse often goes on behind closed doors and unreported?
Is MI5 really going to be interested in whether this man terrorizes his partner, or will they be focused on whether he seems to present a risk to national security/other agents?
Like the spy cops story, this incident raises very difficult questions around how to balance between transparency and upholding the law and protecting (some) vulnerable individuals, while also protecting undercover operations and national security. There are no easy answers that don't risk somebody's safety.
I don't have much faith in MI5 being knights in shining armour to protect women from potential abuse, however.