That's gorgeous Dennis, another top shot!
I'm not sure of the exact time when you took the image, but I believe I can faintly see J0002423-003305 of magnitude 17.75 about one Uranus-diameter above Titania. If that's the case, have you looked for Miranda between Ariel and Uranus? At magnitude 16.58 you may just be lucky and find it in Uranus' glare somewhere?