One lady, in her 60s, told me that she now walks around the area, when it's raining, as it is too difficult to walk on the surface without slipping. I note that there is a similar stone surface on the entrance to the main Hammersmith Broadway tube station and that London Underground puts out rubber mats when it rains. I witnessed several people slipping and falling over while going into the station a few weeks during a heavy down-pour.
Please let me know, by emailing me here, if you have similar problems. I will write to H&F Council to see what health and safety research was undertaken prior to laying that particular stone in Lyric Square; how many complaints they have had about this issue and what they can do to make it safer?