When sending in a CV or job application form, you must include a covering letter. The purpose of the letter is:
To make sure that the CV arrives on the desk of the correct person. Take the trouble to telephone, and find the name of the person who will be dealing with applications or CVs, and address your letter, and envelope, to that person by name. (In a small company, it may be the managing director. In a medium size company, it may be the head of section/department. Only in a large company will there be a Personnel or Human Resource Department.) To persuade the person to read your CV. So it must be relevant to the company, interesting, and well produced.
To clearly say what job you are interested in. Do not say, 'I would be interested in working for Widgets Ltd', but say 'I believe my skills equip me to work in the product development department/accounts office/whatever'. When sending a speculative CV, you may try telephoning later to push your enquiry further. To say why you want that particular job with that particular employer. To draw attention to one or two key points in the CV which you feel make you suited to that particular job with that particular employer.
Start your letter with an underline heading giving the job title you are interested in. (If you saw the job advertised, say where you saw it.). The letter should only be on one side of A4 paper. It must be polite and easy to read. Ending your letter with a request for specific extra information may give a positive response.
