Here are the last of The British Museum pics. I've posted them all very hi-res so click the images to see better the details in the enlargments. Thanks again to Pete Western for the photos.
Above we can observe in the crowd on the left Searle's technique of scratching into the ink work. He would often do this to hair to give an extra feeling of depth when reproduced smaller in magazines. We can see it too in the next image to define the raindrops.