No interactions present.
Ephemera lineata is a Red Data Book species, but can be abundant in and near the Thames in your part of the world. It is attracted to light (much more so than the others in the genus) and I've seen it at shop windows etc., as well as in moth traps, some distance from the Thames.
Entomologist and biological recorder
Lat/Lng: 51.6, -1.2
OS grid ref: SU6189