No interactions present.
The Harlequin Ladybird has a distinct M (or W depends on how you look at it) on the shield on its head so it's not that one.
I could be wrong but I don't think that's the case with all of them. Take a look on Google images, the appearance and patterns of the Harlequin vary enormously
This is definitely H. axyridis (form-conspicua)The W/M is not diagnostic in this variable species.
Lat/Lng: 51.3908, -0.3022
OS grid ref: TQ182671