People who need to make a discreet call to 999 – the UK’s emergency services number – can do so using the British police’s “silent solution” system.
A 999 caller can remain silent if they are unable to speak. Then, when prompted, should key in the number 55 to silently inform officers that they are experiencing a genuine emergency.
If the situation is violent, callers can also call 999 and leave the phone off the hook so that operators can hear what is going on. In most cases, dispatchers will be able to trace the location of the incident from the call itself.