Heterotoma planicornis – I always think the early stage of true bugs look kind of strange, and this nymph is no exception. The adults grow up to around 5mm (just under a 1/4in) long, and they look quite strange, too. See last image. Double-click image to enlarge.
© Peter Hillman ♦ 30th June 2019 ♦ Rear garden, Staffordshire ♦ Nikon D7200