Emissions wise no - unless they have multiple reports of the same thing they probably won't do much unless it is very obvious that something inappropriate is going on with the vehicle with regard to emissions - chances are it was a one off due to the engine being cold, etc. etc.
At least around here though the police are very hot on dangerous driving if submitted through the appropriate web-site (Operation Snap) and they've taken action against loads of drivers due to it - they also don't like busy bodies though either and have taken action against some of the uploaders as well in some cases (
https://www.youtube.com/watch?v=msm4CFNqWBU )