The second advertises a salary starting at
£2,395. That works out to a healthy £46 per week.
And I'm surprised that the profession of Information Scientist existed 43 years ago. Perhaps it's a fancy term for a librarian who can operate a microfiche? Reading wikipedia, it was regarded as quite distinct from the role of librarian, and provided focused information to technical and research staff. much like Google does today. This might explain why you no longer encounter information scientists.