Even in sectors where the total number of jobs is going down, there will still be job vacancies to replace people who leave. But generally:
There will be fewer jobs in primary industries such as agriculture, mining and quarrying.
Traditional manufacturing and engineering will need fewer workers, but will still need people to replace workers who retire and require highly qualified workers to develop new high-technology processes. Find out more about the future of engineering and manufacturing.
It's important to remember that there are job opportunities available for people with the right skills in most industries - even in those industries that are fairly small or even declining as there This is a need to replace workers who retire or leave.