Here is a link to the first sightings of the four eggs of 2015 that have been laid by Hawk and Owl Trust’s Norwich Cathedral Urban Peregrines. The eggs arrived at 0617 on 19 March, 1712 on 21 March, 0528 on 24 March and 1644 on 26 March. All is well and the male bird seems to be displaying the same attentive parental behavior that he has in past years. Here is a link to the first sighting of the four eggs.
The parent birds will have waited until all eggs are laid (usually four) before they will start to incubate the clutch fully. This ensures that the chicks hatch roughly at the same time ensuring relatively even development.
See the live webcam at: upp.hawkandowl.org/norwich-live/