A squirrel runs through fallen leaves during early autumn in Loughborough, October 7, 2009 (Image © Reuters/Darren Staples)

Cold nights, frosty mornings, leaves on the ground and damp in the air: autumn has definitely arrived. As it makes its presence felt throughout the country, we'll be showcasing some of the most striking depictions of the changing of the seasons within this gallery. Click through the images below for snapshots of autumn around the UK.