Length 3.5 to 4 mm.  Simililar in marking to others in this subfamily, but with a shagreened pronotum (a bobbly texture), rather than transverse striations or wrinkles. The black triangles at the base of the scutellum are separated from the sides. 

Anaceratagallia species

Good quality photos of a specimen must show details of pronotum and scutellum.

Among low plants.

February to November.

Common (ref.: UK Auchenorrhyncha checklist 2021 on British Bugs website) 

Occasional

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