Hi Joe Thomas
You can bring the Spotlight photo back by pressing Windows key + L, which locks the PC and returns you to the lock screen. Select the Like button on the lock screen to see more information about the image. Windows may ask you to sign in before opening the details.
If you also want Spotlight pictures on the desktop after signing in, open Settings > Personalization > Background, then choose Windows spotlight. You can select or hover over Learn about this picture on the desktop to identify the displayed image. Please note that the desktop image may not always be the same one currently shown on the lock screen.
Thank you for the question and I hope you have a nice day
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