I'd say the secondary issue is the ability of quangos and non-government entities (including organisations such as companies, 'criminal' orgs and individuals) t

I'd say the secondary issue is the ability of quangos and non-government entities (including organisations such as companies, 'criminal' orgs and individuals) to access this information officially or unofficially. Whatever bad a government can do, others can do the same or worse. Simply collecting such information means that 'bad' actors will gain access at various times and in various ways, so while the collection itself can be painted as innocent, in reality it's highly dangerous.