Some data on midairs: from
here we have
Following a previous mid-air collision, a CAA working group reviewed the recent history of mid-air collisions between recreational aircraft. The review determined that UK-registered aircraft had been involved in a total of 30 mid-air collisions in the period 1995 to 2004, resulting in 27 fatalities from 14 fatal accidents. Thus, collisions averaged three per year, and roughly half of the collisions involve at least one fatality.