Dr. Eddie Casey:

It is more than that. If you look at manufacturing, you can see that pharma might be about two thirds while in services, computers would dominate but it is not nearly as high as this, so the corporation tax is more concentrated. The other side of this that is worth knowing is that if there is a risk that some of these companies reorganise their operations, a lot of them would probably do so for the same reasons. If it makes sense for one company in tech to reorganise how it structures itself and where ultimately the profits and taxes show up, it will probably make sense for another to do the same.