And if so, what was the outcome?
The Independent Office for Police Conduct has launched a campaign to educate the public about what to do in an emergency when you can't speak - dialling 999 silently isn't enough.
The operator will ask you to tap or cough if you need help, but if you don't do either you'll be transferred to Silent Solution after 30 seconds which will ask you to dial 55 if you require help. If you do not dial 55 the call will terminate and no help will be sent.
www.bbc.co.uk/news/uk-47847735