Jamie Mallender is a 37 year old professional musician from Sheffield (UK.) He is the regular bass player for Tony Martin - the former Black Sabbath vocalist, and has toured the world extensively in this capacity - performing to as many as 15,000 fans at Arena shows.
When Jamie is not busy working with The Tony Martin Band, he plays sessions, teaches bass and guitar and is currently very busy recording his own bass oriented instrumental album - which will be called Return To Bass.
I had the honor of chatting with him on black-sabbath.com and he's really great guy and his bass playing skill is awesome.
Here are some links:
His song, Lalyla's Funk: http://www.youtube.com/watch?v=S_4eX8yk0k0&feature=channel_page