Lavrov claims Spiez Lab in Switzerland, an OPCW lab, submitted to OPCW a report that states the Skipral sample contained BZ, an incapacitating chemical used by the UK, in addition to A-234, a lethal chemical used by Russia.
Spiez does not deny this (even publishes Lavrov’s claim) nor comments on it but refers back to Porton Down, an OPCW lab in the UK.
Sergei and Yulia Skripal are still alive.