Unknown foliose lichen

Unknown foliose lichen

Observation - Unknown foliose lichen. Description: This unknown foliose lichen was found in a shaded area near a hedge in a suburban setting in London. Would be grateful if anyone could identify it, if possible from these pictures

This unknown foliose lichen was found in a shaded area near a hedge in a suburban setting in London. Would be grateful if anyone could identify it, if possible from these pictures