We had some felt replaced on our roof a couple of months ago. After the job had been done I went up the scaffolding and took a look at the outside of the roof. See photos at the bottom of this post. I noticed some cracked tiles which I photographed but didn't think much of it.
Just a couple of days ago someone came to clean our gutters, and upon completion they told me that our cracked tiles are dangerous and we should get the roof replaced urgently.
Are they really dangerous? Or is this just a cosmetic problem?