42 Research, design, development and technical consultancy services, all relating to electrical and electronic equipment, telecommunications systems, cellular wireless basestations, femtocells, small cells, and microcells, modules, components, parts and fittings for cellular wireless basestations, femtocells, small cells, and microcells, computer software, computer software for telecommunications systems, computer software for cellular wireless basestations, femtocells, small cells, and microcells, computer software for the management of cellular radio interference through the use of overlapping carrier techniques; installation, repair and maintenance of computer software, computer software for telecommunications systems, computer software for cellular wireless basestations, femtocells, small cells, and microcells, computer software for the management of cellular radio interference through the use of overlapping carrier techniques