I don't know if this applies to anyone else here but I thought I would draw it to your attention in case it is useful to you or others you know.
A new service has just been launched on a trial basis allowing individuals with communication difficulties to contact the emergency services by text from a standard mobile phone with the same priority as a 999 phone call. This could literally be a life-saver. Some individuals have access to text-phones but would not have these when out and about and others, myself included, do not have text phones and rely on others to contact the emergency services which can be very difficult when you are struggling to make yourself understood.
Details and registration details are here: