Name.
Contact details.
Personal statement (make this brief, what you are, where you want to be, why you are in the position of looking for another job if required)
Employment history (brief outline of company and what it did bullet point key information about role)
Qualifications.
Interests (they are not interested in this part, so dont waste your time writing an essay about your snowboarding holidays, they just want to see that you are not a Norman Bates type, dont list "socialising" as one of your interests, its interpreted as getting drunk in a lot of places)
Tailor CV for the job you are applying for, over emphasize relevant duties or skills in previous roles that are relevant to the prospective position, one size doesn't fit all.