City workers enjoy spring sunshine during their lunch hours at the Guildhall, next to an outdoor photography exhibition on the theme of mental health, in the City of London, the capital's ancient, financial district, on 14th May, in London, England. Located in the courtyard of Guildhall Yard, Let's Talk is a collaboration between photographer Charlie Clift and artist Kate Forrester. It takes the form of a series of large photographs of celebrities
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