Cornish J if you want to download any of them as a wallpaper they are in this folder, open the Cosford 2017 one
https://www.flickr.com/photos/142550108@N08/albums
select the picture you want and view it, select the arrow facing down to a horizontal line on the right side below the picture
select all sizes, pick one of the largest, open it and right click on it when its opened, then select set as background, you can then size it to suit, if set as background is greyed out wait a little until it flly opens and then it will allo you to set it.
The "person" they were winching was a dummy..