The UK Government provide FREE on-line access to the UK Building Regulations. These should be followed when specifying floors in new or existing buildings. They have been around many decades, so there is no real excuse for a Slip Injury Accident by stating that regulations have changed. Always go to the latest dated item on-line (links provided below).
The main items to consider are: -
and...
* Approved Document M Vol 2 calls up BS 8300-2 2018 Annex C.2 calls up BS-7967-2 as the standard for Pendulum Testing of Floors for Slip Resistance; BS-7976-2 is now replaced by EN-16165
https://www.gov.uk/housing-local-and-community/building-regulation