This list is based on the following principal references: A number of other references were used to provide information on specific topics, including rare vagrants, post-1990 additions, predictions, species claimed but not accepted/species of uncertain provenance, non-natives, taxonomic matters and species found only in the Channel Islands.
Details of species which have occurred in such circumstances can be found in Agassiz 1981,[17] Brooks 1988,[18] and Parr 2000a.
The following species have been recorded, and their identification accepted, but the circumstances surrounding the records and/or specimens cast doubt on their natural occurrence, and they are not included in the official British list: 3.
The following is a list of species which have previously been predicted to occur in Britain but have not yet been recorded (see Merritt, Moore & Eversham 1996[1] pp.
113–114 and Parr 1998,[29] 1999[30]): subarctic darner (Aeshna subarctica), northern white-faced darter (Leucorrhina rubicunda) and small emerald damselfly (Lestes virens).