Stuart Ball and Roger Morris have together managed the Hoverfly Recording Scheme since 1991. They are authors of several atlases of British hoverflies and the most recent Status Review. As active members of the Dipterists Forum, they have run many identification training courses across Britain. Both previously worked for the statutory nature conservation agencies: Stuart Ball for the Joint Nature Conservation Committee, and Roger Morris for English Nature/Natural England before leaving to become an independent consultant. Both are now happily retired.