‘Above 20C is shorts territory’: City workers use heatwave to push the boundaries

Jake, who works in a law firm, says a bowtie means he doesn’t have to give up ties completely during the heatwave. Photograph: David Levene/The Guardian

Summer in the City of London: as the mercury climbs you can leave your tie at home – and even brave a pair of shorts and trainers.

Companies based in the capital’s financial district have for years adhered to more traditional dress codes than other employers, with many firms demanding “business casual” from their staff, whatever the weather.