I think last year two of the three chicks survived. Maybe it was the year before where none survived, perhaps having been fed poisoned pigeon meat by their parents. Nature is left to take its course and the birds have been breeding here since the 1990s.
It seems rather a lot of us like watching paint dry for an occasional bit of action You you can watch the live feed on Youtube this year at https://www.youtube.com/watch?v=eyF-L2SqJ-Q If you have a smart tv, you can watch it on the big screen. Make sure the date and time is correct as already the YT address has changed once. The night time vision is quite good too. This stream is a labour of love for someone or some people, so complaints are not welcomed. They do their best.