Can’t watch the video but I suspect I know what it says and someone else has written about it here:
http://www.mountainsafety.co.uk/EP-999-or-112-Which-is-Best.aspx
The Bottom Line
In the UK, 999 and 112 do the same thing, namely connect you to the emergency services. Neither number has priority over the other, and neither number provides location information better than the other. They are the same.
Continue using 999 in the UK and you will have no issue.
The incorrect information in the above video relates to EmergencySMS. Click here to skip down the page to that section (read to the bottom if you skip).
Ofcom issued a consultation paper in 2013 on the subject of location information, and how it could be enhanced further in the future. Within the paper there is clear reference to the fact that 999 and 112 are the same. Take a read of sections 2.3 & 2.4 of the consultation document.