Your first link doesn't work Iains. The second is to a lecture not a peer reviewed publication. However it is true that Bill McGuire published 6 papers in Philosophical Transactions of the Royal Society A, according to their own index, with the last few being in 2010. Philosophical Transactions of the Royal Society A appears not to be indexed by NASA ADS. So his output is roughly double what I had originally thought, but still nothing since 2012.