notice in writing to the licensee revoke the licence. (2) A licence shall not be revoked, nor shall its renewal be refused without giving the licensee a reasonable opportunity to be heard by the Board. 18. Appeal Any person aggrieved by the revocation of his or her licence, or by the Board's refusal to renew his or her licence may appeal to the High Court within such time as may be prescribed. 19. Record to be kept by licensee A licensee shall­ (a) keep and store sound and video recordings of all programmes broadcast or re-broadcast for a minimum period of three months after the date of transmission of the broadcast or re-broadcast, or for such further period as may be directed by the Board; and (b) on demand by the Board produce such material that has been broadcast for examination or reproduction. 20. Programmes not suitable for exhibition to children Without prejudice to the provisions of section 178 of the Penal Code (relating to obscene publications) a licensee shall, where a programme to be broadcast or re-broadcast is not suitable to be exhibited to children, advise or warn members of the public accordingly. 21. Code of practice Regulations may prescribe a code of practice which shall be observed by all licensees. PART IV Miscellaneous Provisions (ss 22-24)*(4) 22. Offences A person who­ (a) is guilty of an offence under this Act; or (b) contravenes any provisions of this Act, shall be guilty of an offence; and shall be liable on conviction to a fine not exceeding P5000 or to a term of imprisonment not exceeding three months, or to both. 23. Regulations The Minister may by statutory instrument make regulations providing for any matter which under this Act is to be prescribed or is to be provided for by regulations or which otherwise is Copyright Government of Botswana