The small white wave things always confuse me.
Attracted to MV light.
5/vii - 20
No interactions present.
I asked the (highly reliable) Rachel Terry to have a look at this specimen for me and she agreed with Dwarf Cream Wave.
Lat/Lng: 51.546948873781, -0.32630681991577
OS grid ref: TQ161844
Horsenden Hill nature reserve (http://www.ealing.gov.uk/services/leisure/parks_and_open_spaces/find_a_park_or_open_space/perivale.html)