I don't know why this has made it into the Guardian today. It is an old story. He first mooted the idea of a lower than standard ground state for hydrogen in 1991. He has written a 1000 page theory of it. According to some that have reviewed it, parts of it are good and original. Sadly the parts that are original are not good and the parts that good are not original. That is, there are lots of gross blunders interspersed with passages cribbed verbatim from others without attribution. If it were true not only would if trash the whole of standared quantum mechanics but also relativity as well as his theory is not Lorentz invariant.