RV spotted in Northern Ireland

I was watching BBC channel and found this link. Thousands of people gathered in Portrush, County Antrim, to witness spectacular acrobatic aerial displays at the Northern Ireland International Airshow.

Beautiful RV was performing aerobatics from 30 seconds to 1 minute 20 seconds on the video. Whose RV is that? I could not see the registration.

The Cow

Seems to be the one depicted here :

http://www.connemaraairshow.com/index.php?option=com_content&view=article&id=65&Itemid=153

Gerry Humphreys RV-7 EI-HUM

Vlad,
You don't need to see the registration. The scheme is a bit of a give away.

http://www.abpic.co.uk/search.php?q=EI-HUM&u=reg