Ive seen other butterflies in this area before including Large White & Speckled Wood, but this is the first opportunity Ive had to get a decent pic. I like this side profile in particular because its curly proboscis and antennae are clearly visible whilst there's slight movement in its wings.
And just in case there's any question of unsubstancial evidence to support the sighting, here's Leeds Magistrate's Court in the background. 
That reminds me of another urban butterfly sighting was whilst sat at my desk at work. My office is on the 5th floor, facing south, overlooking the centre of Leeds. A couple of weeks ago I looked up and spotted a butterfly at the window, heavily backlit by strong sunshine, it was the size & shape of a Small Tortoiseshell unfortunately it flew off before I could get to the window. Joyce's windowsill is currently home to a thriving herb garden, I wonder whether it was attracted by the fragrance of the luxuriant basil plants?
