What species is this jumping insect?
Found in the United Kingdom in summer.
About 1 cm body length + 1 cm feelers.
It looks to be a bush cricket of the Leptophyes genus. Possibly Leptophyes punctatissima, also known as the speckled bush cricket - not sure if the one in your image is speckled or not. It is endemic to Europe and can be found in the UK.
Photo source: Wikimedia commons - Leptophyes_punctatissima