Our local Chinese restaurant has been showing off their new seating on Facebook. They have recovered the old fixed bench seats & backs with a new fabric. The fabric looks pretty cheap and nasty to be honest (I used to work in a furniture shop) and I doubt it is fire retardant. I'm concerned about this to be honest, especially since this is a first floor restaurant with a narrow staircase. I wondered who I should raise this with. It really needs checking.

As it is a commercial premises it is subject to the RRFSO and the enforcing authority is the local fire service so you should contact them. Check out https://www.firesafe.org.uk/uk-fire-rescue-services-details/