Hairy Beech Gall
- Peak month
- September
- Records since 2000
- 886
- Scientific name
- Hartigiola annulipes
Fannia sociella
- Peak month
- June
- Records since 2000
- 881
- Group
- True flies
Delicate Sedgesitter
- Peak month
- June
- Records since 2000
- 872
- Scientific name
- Platycheirus angustatus
Dolichopus plumipes
- Peak month
- June
- Records since 2000
- 870
- Group
- True flies
Sarcophaga subvicina
- Peak month
- August
- Records since 2000
- 870
- Group
- True flies
Chrysotoxum arcuatum
- Peak month
- May
- Records since 2000
- 862
- Group
- True flies
Molophilus medius
- Peak month
- July
- Records since 2000
- 859
- Group
- True flies
Pilaria discicollis
- Peak month
- June
- Records since 2000
- 859
- Group
- True flies
White-barred peat hoverfly
- Peak month
- May
- Records since 2000
- 858
- Scientific name
- Sericomyia lappona
Sarcophaga vagans
- Peak month
- July
- Records since 2000
- 855
- Group
- True flies
Hydrophoria ruralis
- Peak month
- July
- Records since 2000
- 853
- Group
- True flies
Narrow-cheeked Clusterfly
- Peak month
- July
- Records since 2000
- 853
- Scientific name
- Pollenia angustigena
Pedicia rivosa
- Peak month
- August
- Records since 2000
- 843
- Group
- True flies
Polietes lardaria
- Peak month
- June
- Records since 2000
- 837
- Group
- True flies
Chirosia grossicauda
- Peak month
- August
- Records since 2000
- 835
- Group
- True flies
Corynoptera inundata
- Peak month
- May
- Records since 2000
- 835
- Group
- True flies
Flecked General
- Peak month
- July
- Records since 2000
- 835
- Scientific name
- Stratiomys singularior
Four-barred Major
- Peak month
- July
- Records since 2000
- 834
- Scientific name
- Oxycera rara
Cabbage Maggot
- Peak month
- May
- Records since 2000
- 821
- Scientific name
- Delia radicum
Broad-barred Brusheye
- Peak month
- May
- Records since 2000
- 813
- Scientific name
- Dasysyrphus venustus
Corynoptera tetrachaeta
- Peak month
- July
- Records since 2000
- 813
- Group
- True flies
Atherix marginata
- Peak month
- September
- Records since 2000
- 812
- Group
- True flies
Barred Snout
- Peak month
- July
- Records since 2000
- 811
- Scientific name
- Nemotelus uliginosus
Coastal Silver-stiletto
- Peak month
- July
- Records since 2000
- 811
- Scientific name
- Acrosathe annulata
Megaselia sp. BOLD:ACX6055
- Peak month
- August
- Records since 2000
- 808
- Group
- True flies
Corynoptera trepida
- Peak month
- February
- Records since 2000
- 805
- Group
- True flies
Notiphila riparia
- Peak month
- June
- Records since 2000
- 794
- Group
- True flies
Downland Bee-fly
- Peak month
- July
- Records since 2000
- 791
- Scientific name
- Villa cingulata
Paragus haemorrhous
- Peak month
- July
- Records since 2000
- 791
- Group
- True flies
Yellow-faced Blowfly
- Peak month
- July
- Records since 2000
- 789
- Scientific name
- Cynomya mortuorum
Yellow-legged Black Legionnaire
- Peak month
- July
- Records since 2000
- 777
- Scientific name
- Beris morrisii
Tipula fascipennis
- Peak month
- June
- Records since 2000
- 773
- Group
- True flies
Adia cinerella
- Peak month
- August
- Records since 2000
- 772
- Group
- True flies
Helina depuncta
- Peak month
- June
- Records since 2000
- 771
- Group
- True flies
Thienemanniella majuscula
- Peak month
- September
- Records since 2000
- 770
- Group
- True flies
Large Marsh Horsefly
- Peak month
- July
- Records since 2000
- 765
- Scientific name
- Tabanus autumnalis
Black Colonel
- Peak month
- June
- Records since 2000
- 761
- Scientific name
- Odontomyia tigrina
Megaselia brevicostalis
- Peak month
- August
- Records since 2000
- 761
- Group
- True flies
Suillia affinis
- Peak month
- May
- Records since 2000
- 760
- Group
- True flies
House fly
- Peak month
- July
- Records since 2000
- 758
- Scientific name
- Muscina levida
Opetia nigra
- Peak month
- June
- Records since 2000
- 756
- Group
- True flies
Syrphid Fly
- Peak month
- July
- Records since 2000
- 754
- Scientific name
- Eristalinus aeneus
Megaselia pumila
- Peak month
- June
- Records since 2000
- 752
- Group
- True flies
Tanytarsus lestagei
- Peak month
- June
- Records since 2000
- 752
- Group
- True flies
Thaumatomyia notata
- Peak month
- July
- Records since 2000
- 752
- Group
- True flies
Metopina oligoneura
- Peak month
- August
- Records since 2000
- 749
- Group
- True flies
Snouted Duck Fly
- Peak month
- June
- Records since 2000
- 748
- Scientific name
- Eurimyia lineatus
Lejogaster metallina
- Peak month
- June
- Records since 2000
- 745
- Group
- True flies