The following wallpapers are 640×960 pixels in size, and designed for use on the iPhone 4/4S. Home screen images feature a slightly darkened navigation bar (where the paging dots appear), along with a fade-to-darker gradient in the Dock area below the navigation bar.
Note that the images shown in the image sliders below (hover and click to cycle) are low-quality 256×256 JPEG representations of the actual photos; to get the high-quality images, download the entire bundle [6MB] and install only those you wish to use.
License: All photographs in these wallpapers are © Rob Griffiths, and are freely provided for personal use only. You may not include these wallpapers on other sites, nor in any commercial product, without my prior permission. (I hate having to put this here, but prior experience has shown it to be necessary.)