Technical services concerned with computers, computer apparatus and peripheral equipment, data processing apparatus and equipment, and word processing apparatus and equipment including programming of computers, leasing and/or time-sharing of computers, engineering of hardware, customisation and integration of computer hardware; design, writing, development, customisation and integration of computer software; computer networking; technical specialist, advisory and consultancy services relating to computers and computer industries, communications networks, office computer systems, information technology, Internet and electronic commerce software and systems