Today was one of those miserable days, with heavy rain ( so typical London) so I thought my clouds photo challenge day would be a monotone grey hazy image.  Luckily en route to the BFC X Stephen Webster rock vault reception the clouds broke so I quickly took my opportunity.  My camera was set to AV (Aperture priority) which sets the shutter speed and ISO to create a balanced exposure, so this offset the bright sky and retained some light on the building to capture the architecture, and maintain the definition of the clouds.