Link to The World Seido Karate Organization who officially opened its headquarters on October 15, 1976, in New York City under Kaicho. The World Seido Karate Organisation has thriving branches throughout the United States and in such diverse places as Asia, Australia, Europe, New Zealand, South Africa, and South America.
Link to Seido UK and the branches operated through the UK, led by Jun Shihan Roger Thyer-Jones.
Link to Seido Chiswick, London, jointly led by Kyoshi Bede Brosnahan and Kyoshi Matt Sherratt
Link to Seido Fulham, London, led by Jun Shihan Brandt Leitch