The London Metal Exchange advised members that, effective January 3, 2018, all members must have certified to the LME all of their own algorithms used to conduct LME business as well as algorithms of customers sponsored for direct LME access. In general, algorithmic trading includes where a computer system automatically determines parameters of an order or how an order should be managed after its submission with limited or no human intervention. However an algorithmic system does not include any system whose sole purpose is to route orders to one or more trading venues. Substantial changes to existing algorithms must also undergo conformance testing with LME prior to deployment. Existing algorithms must have conformance testing completed by December 13.