Stuart Ball and Roger Morris have together run 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 originally worked as entomologists for the statutory nature conservation agencies. Stuart Ball continued to work for the Joint Nature Conservation Committee until 2016. Roger Morris worked for English Nature/Natural England before leaving in 2009 to become an independent consultant. Both are now happily retired.