Blue grey foliose lichen together with orange crustose and black tar lichen on york stone paving. Open south facing driveway so well worn!
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
The image of the lichen doesn't show details clearly so I think identifying from the image may be difficult. That blue-grey colour lichen and on the paving you describe might by Lecanora muralis (it might be other things too!). You could try that name in the 'Search iSpot' panel and have a look at other pictures to see if it seems to be the same as the ones in your picture.
Lat/Lng: 51.412, -0.043
OS grid ref: TQ361699