Found on the arm of our garden chairs, they were not there when I checked a few days later
No identification made yet.
No interactions present.
May well be a slime mould - try assigning to Fungi, although getting much further may be hard.
Not my area, so I won't put up an ID, but it brings Dacrymyces (a fungal genus) to mind.
I agree Dacrymyces more likely.
Lat/Lng: 51.4, -0.6
OS grid ref: TQ0271