Advisory services relating to computer hardware; advisory services relating to computer programming; advisory services relating to computer software; advisory services relating to computer systems analysis; advisory services relating to computer systems design; analytical services relating to computers; computer co-location services; computer consultancy services; computer disaster recovery services; computer engineering consultancy services; computer firewall services; computer hire; computer network services; computer program advisory services; computer program maintenance services; computer rental; computer support services (programming and software installation, repair and maintenance services); design of computer hardware; design of computer software; development of computer based networks; information technology (IT) services (computer hardware, software and peripherals design and technical consultancy); rental of computer equipment; rental of computer hardware; rental of computer programs; rental of computer software; rental of computers