I was approached by URA for the use of my pictures some time ago. It may have been for the same presentation. Apparently they came across the photos in my Flickr photo stream.
To the TS, it is best that you clarify directly with URA on where they obtained the photo. You will need to prove that the photo is yours, so make sure you have your original on hand to show them. And as pointed out by previous posters, to ensure that you didn't enter it in one of their previous competitions.
If the image was really taken without your permission, I believe you have the right to request URA to withdraw it immediately.
If you need the name of the URA staff to liaise with, let me know via PM. I think I may still have the email address and number. If not, I can help you check.