Thank you Sean.. and Abasan for your replies...
You are correct Sean, our reference to the Hombu was intended to mean the Yoshinkan Hombu.
Rank: 8th dan, Shihan (Yoshinkan)
Dojo: Aikido Yoshinkan Hombu Dojo
3F Takayama Building
Shinjuku-ku Tokyo 161
Note: Speeelling corrections are on their way.