Under section 12 of the Misuse of Drugs Act 1975, it is an offence at the moment to knowingly allow premises to be used for the commission of an offence against the Act. Before section 12 was amended by the drug checking Act recently, on an interim basis, event organisers and other hosts who allowed drug-checking services to take place were at risk of prosecution under section 12, because the promotion of drug-checking services could have constituted evidence of knowledge that drugs were being consumed or possessed on the premises. The drug-checking amendment on section 12 provided that it's not an offence to host a drug-checking service any more.