I want to get old photos off my iPhone 5 but the screen is broken and I have no access?

The screen on my old iPhone 5 is broken. I got a new iPhone 6 but I never backed up my stuff to iCloud. I'm plugging the iphone 5 into itunes and It tells me "to allow access, please respond on your iPhone." I obviously can't do this as my screen is broken so does anyone have any tips?

Plug your phone into a computer - it should ask what you want to do
open folders to find the photos and drag and drop to a computer file
and you can use that same way to delete the photos off the phone