Are there dedicated courses for cloud engineering or cloud computing, or should I pursue a computer science master's with a major in cloud domains in UK?

With your background in Electrical Engineering and 14 years of experience, a dedicated Master's in Cloud Computing or Cloud Engineering in the UK would suit you better than a general Computer Science degree. Programs like those at Leeds, East London, and Sheffield Hallam focus specifically on cloud technologies and will help you build targeted expertise for your next career step.