As you want to get the details of career after B.Sc Mathematics Honours so here is the information of the same for you:

Some job types: -
Lab Supervisor
Researcher
Technician
Teacher
Scientists
Consulting Physicist
Senior Physicist
Analytical Chemist
Lab Chemist
Production Chemist
Chemical Engineering Associate
Biomedical Chemist
Demographer
Statistician
Accountant
Technical Writer
Loan Officer
Treasury Management Specialist

Most of the mathematicians are placed in government sectors and in industries such as research operations, commercial surveys and numerical analysis. Graduates with higher degrees in applied mathematics have a wide array of job opportunities to choose from.

Chemists are mostly employed in pharmaceutical industries, institutions, research institutes, schools and government laboratories.