https://www.bbc.co.uk/news/articles/c789nn3d918o
To be clear, I fully endorse the idea of a safety scheme, it's the methodology of this one I'm questioning.
The idea behind 'Ask for Angela' is that anyone feeling unsafe can discreetly ask for help in a pub, bar or similar - because saying 'is Angela in tonight' or similar sounds as though you are asking after a member of staff, and won't alert your date/companion to the fact you're seeking an escape route.
However, the effectiveness of the scheme depends on bar staff understanding this code, which, as the linked article suggests, more than half of them don't.
This suggests awareness of the code word needs to be increased - but, if it becomes so widely known that you can guarantee all bar staff will understand it, what is the point of having a code word at all? Bar staff are not a separate species; if it's universally recognisable to them, it's going to be universally recognisable to the people who are causing others to feel threatened enough to use it.
If the idea is that you get away from your threatening date to 'ask for Angela' at the bar, where you won't be overheard, why is there a need for a code at all? Why wouldn't people just ask for help?
It would be better to promote the idea that anyone can ask for help in a bar (or similar public place) and receive it - this would not then rely on other people understanding a code, or, indeed, the victim knowing there was a code they could use (if bar staff don't understand it then there's a high chance many victims won't know about it either).