LPCB / Certifire / IFCC — which certifications matter to clients?

Passive fire products often come in certified and non-certified variants at significantly different prices. Which third-party certifications do your clients actually recognise and demand? - LPCB (LPS 1181, LPS 1208) - Certifire (Warringtonfire) - IFCC - BM TRADA - European ETA Happy to be wrong if there is a cheaper option that holds up in court.