Contact Us Help Desk The first thing to say about the MSL help desk is that it’s not a call centre. As a client, you have your own customer service advisor, who makes it their business to understand your business and its needs. Supply Chain Management & Procurement Services Both sourcing and maintaining a large supply chain across a range of services is time consuming and resource intensive. The MSL Safepartner scheme can accredit and manage the performance of your supply chain. inSYNC® Supporting all MSL's activities is the in house developed inSYNC® integrated FM system. Live integration of modules provides total transparency of activity and communication from the individual site, to customer head office to MSL. How we work At MSL Property Care Services Limited, we listen to what our customers want. As we have evolved as a business to offer more services, we have not forgotten the simple ethos that made MSL a leading UK maintenance provider.