I know you're joking but Section 1 of the UK Patent Act 1977 as amended (it's been 5+ years but I'm pretty sure it's in 1(1)) includes the requirement for industrial applicability.<p>AFAIR I did make an objection under that clause once out of hundreds of applications. No one can issue patents, by law, apart from the Patent Office and so the patent could not be applied by the holder - also there are morality clauses (which again only very very rarely could be applied, again IIRC I made a casefile note on consideration of a morality objection only once but didn't object). Finally the Gov. has the option to use any application in times of national crisis  - I think I remember something about radar patents being used in WWII but that the inventors had been compensated.<p>Lastly if you're sitting on a patent and won't license it and aren't using it yourself the Comptroller can force you to license it under terms they consider fair.