FROM: https://en.wikipedia.org/wiki/Category:Technology_companies_of_the_United_Kingdom

video conferencing
video advertising
video distribution
virtual data room
video survelliance systems

media and entertainment
hospital bedside communication and entertainment systems

https://en.wikipedia.org/wiki/Ecourier
google street view
location-based services
telematics

design software
drug modelling software
scientific imaging software
electrical generator modelling
materials research
antenna modelling
electronics design

application, account management, and administration product suite
decision support
consultancy
mobile commerse, e-commerse
high performance computing

note, on debian:
the packages starting with med- are metapackages for the debian med blend
the packages starting with science- are metapackages for the debian science blend