Things vary from subject to subject. As you are thinking about the pharmaceutical industry I assume you are interested in life/biomedical sciences. In this area academics often complain of the difficulty in recruiting good postdocs. This is either due to the inadequacies in the PhD training system or because of a brain drain into better paid positions in industry (probably the later). As long as you are prepared to relocate you should have little difficulty in securing a postdoctoral position.
After this lectureships and/or research fellowships are a much more difficult proposition and can be a lot harder to come by. However the pharmaceutical industry will still be interested in you after one or more postdocs.