Thanks, it may be a model / network specific issue in that case.
I have just checked our phones again:
In Ireland on my Galaxy S2 I get the control panel only on 'Test' which does not work and on 'Test Manual' a black panel with the message "No video with supported format and MIME type found"
In Ireland on the Galaxy Mini both pages show an arrow 'Play' symbol with three animated circles above, but touching the graphic has no effect.
In the UK on different networks, the animations do not work on a current iphone.
A Samsung Galaxy S3 shows the videos, but it does have an MP4 player installed.
I will continue my investigations!!!
As a matter of interest which phone works?