we have no idea what these are and what they turn in to?
No interactions present.
At the date of 3rd September these are full grown larvae looking for somewhere to pupate hence see them wandering across paving etc. There is also a green form of the larvae but both come out as a particularly nice looking moth. If you have a flowering Honeysuckle in the garden then you might just see the adult moths flying around the flowers feeding on the nectar at dusk in June or July
Joint Macro-moth recorder for Bedfordshire, VC30
Lat/Lng: 51.096, -1.6351
OS grid ref: SU256330