Here are some useful links to...

-...cathedral choirs / church choirs

• St George's Church Hanover Square, London

• Newport Cathedral Choir (Wales)
  

• Exeter Cathedral Choirs
  

• Bristol Cathedral Choirs
  

• Regensburger Domspatzen

• Knabenchor Niederaltaich

• Schottenchor Regensburg

...organisations / music colleges  /  universities

• English Cathedral Music

• Royal College of Organists

• Royal School of Church Music

• Musica Sacra (Germany)

• Royal College of Music, London

• Royal Academy of Music, London

• Birmingham Conservatoire

• Hochschule für Kirchenmusik, Regensburg

• King's College School, Wimbledon
  

...people

• Franz Walden (Catholic Priest, Nordendorf, Germany)

• Harry Krippner (Visual Artist, Germany)

• Martin Völlinger (Choirmaster, Lucerne Boys' Choir, Switzerland)

• Wolfram Graf (Composer and Organist, Hof, Germany)

• Dominik Herrmann (Opera Bass Singer, Frankfurt a.M., Germany)

• Prof Dr Stefan Kloeckner (Gregorian Chant expert, Germany)

• Mark Swinton (Director of Music, Kendal Parish Church, UK)

www.organrecitals.com - the most comprehensive list of organ recitals in Britain