What?
So just because Sky owns the rights to Sinclair IP, this company assumes that this includes the IP of all the independant game producers who ever produced anything for the machine? What an absurd point of view.
As far as I am aware, most game producers from the Spectrum era (apart from Ultimate Play the Game/Rare) are not that bothered about people using their stuff on emulators where no money changes hands. However, I can see why they might get upset when somebody elss is profiting from their work and not paying them.