My best guess would be Calliptamus italicus but it's hard to tell with the angle and you have resized the photo is a very small size.
It may well have been mentioned here before but there is a great new book out
Buy Grasshoppers of Britain and Western Europe: A Photographic Guide (Bloomsbury Naturalist) Illustrated, with CD by Éric Sardet, Christian Roesti, Yoan Braud (ISBN: 9781472954862) from Amazon's Book Store. Everyday low prices and free delivery on eligible orders.
www.amazon.co.uk
Although if you are French speaking, this book is also good
Buy Le guide des sauterelles, grillons et criquets d'Europe occidentale by (9782603015643) from Amazon UK’s Books Shop. Free delivery on eligible orders.
www.amazon.co.uk