Some useful links for organists and church musicians:

Scottish Federation of Organists
http://www.scotsorgan.org.uk

Glasgow Society of Organists
http://www.thegso.org.uk

Edinburgh Society of Organists
http://www.edinburghorganists.org

Royal College of Organists
http://www.rco.org.uk/

Royal School of Church Music
http://www.rscm.com