Looks like they're moving North!
My dad's mate found one of these in South Yorkshire last week. Got some photos but not sure how to upload them.
http://images.google.co.uk/imgres?imgurl=http://www.countryside-trust.org.uk/edge/edgeimages/bush-cricket-Occ.jpg&imgrefurl=http://www.countryside-trust.org.uk/edge/edgecricket.htm&h=165&w=225&sz=15&hl=en&start=12&tbnid=YoYqj9Os3fZFUM:&tbnh=79&tbnw=108&prev=/images%3Fq%3DBUSH%2BCRICKET%26svnum%3D10%26hl%3Den%26lr%3D%26sa%3DG