Any idea what this might have been

Any idea what this might have been

Observation - Any idea what this might have been - UK and Ireland. Description: I took a number of photographs of lichen at Wakehurst Place, and looking at them at home noticed this orange structure in the corner which has diverted my interest. Any idea what it is?

I took a number of photographs of lichen at Wakehurst Place, and looking at them at home noticed this orange structure in the corner which has diverted my interest. Any idea what it is?