Length 5 to 6 mm.  From above, the large yellow pronotum obscures most of the vertex.  The face is plain yellow, without markings, and the wings are brown.   

Please provide photograph to support your record.

Associated with Lime trees (Tilia), particularly Small-leaved Lime.

Summer. 

Notable B; scarce. (ref.: UK Auchenorrhyncha checklist 2021, on British Bugs website)

Rare

https://www.britishbugs.org.uk/homoptera/Cicadellidae/Pediopsis_tiliae.html