This image is printed in reverse (also at the IWM). This is visible as the aerial from the forward aerial post is going downwards to port (should be starboard), the camouflage pattern of HMS Cleopatra in the far distance (not visible at this resolution) and the position of the crew. This can be easily verified by an image on the website of the official HMS Euryalus Association. Note the direction of the aerial wire and the text confirming that this image's orientation is correct.
