Premise: The Anchor Bankside is a pub in the London Borough of Southwark. It is in the Bankside locality on the south bank of the Thames close to Southwark Cathedral and London Bridge station. A tavern establishment (under various names) has been at the pub's location for over 800 years. Behind the pub are buildings that were operated by the Anchor Brewery.
Hypothesis: The Anchor Bankside often stays open later on warm summer nights.