Big data is a buzzword for the past few years. A huge amount of the data come from so-called Internet of Things (IoT) applications which are gathering momentum across many industrial sectors worldwide. Many research problems arise from IoT data, e.g. reliable wireless communication solutions for data collection and delivery, efficient data processing techniques for different industrial applications, quick decision making based on data mining and machine learning, security and privacy. In this lecture I will discuss some of these issues based on my previous and current research work, with application examples in areas such as smart energy, e-health, and smart city. I will finish by addressing some of the research challenges in our exciting new project called SEND at Keele.