Russ Martin, 5th Dan TKD is recognised within the Taekwondo Association of Great Britain as an expert on applied Taekwondo (the practical application of the basics and patterns). He should really be known further afield as he has a very extensive knowledge.
To better understand his own art he decided to study Shito Ryu Karate as well and has attained his black belt in that too. He has also attended seminars with many of the great names in applied pattern/kata bunkai.
In the videos below he demonstrates applications to a number of basic blocks and pattern movements, most of which will be very readily recognised by most Karateka as well.
Russ can be contacted through his website at: www.tkdbristol.com.