Readers of these pages will be familiar that in addition to holding its gold bars in a HSBC vault in London, the SPDR Gold Trust (GLD), the world's largest gold-backed ETF, at times also holds some of its gold bars in the vaults of the 'Bank of England' in London.

After Jerome Powell's neutral-to-slightly-dovish-but-mostly-boring speech on Friday morning, investors could be forgiven for suspecting that this year's Fed-sponsored gathering in Jackson Hole might be disappointingly dull (especially with all that's going on in Trump's twitter feed, the escalating trade war and escalating geopolitical unrest).