Article 1
(3) The official language of Zambia shall be English.
Article 13
(2) any person who is arrested or detained shall be informed as soon as reasonably practicable, in a language that he understands, of the reasons for his arrest or detention.
Article 18
(2) Every person who is charged with a criminal offence --
(b) shall be informed as soon as reasonably practicable, in a language that he understands and in detail, of the nature of the offence charged;
(f) shall be permitted to have without payment the assistance of an interpreter if he cannot understand the language used at the trial of the charge;
Article 26
(1) where a person's freedom of movement is restricted, or he is detained, under the authority of any such law as is referred to in Article 22 or 25, as the case may be, the following provisions shall apply --
(a) he shall, as soon as reasonably practicable and in any case not more than fourteen days after the commencement of his detention or restriction, be furnished with a statement in writing in a language that he understands specifying in detail the grounds upon which he is restricted or detained;
Article 64
Subject to Article 65, a person shall be qualified to be elected as a member of the National Assembly if, and shall not be qualified to be so elected unless -- (c) he is literate and conversant with the official language of Zambia.