The retrofit issue features three building studies: Bötzow Brewery in Berlin by David Chipperfield Architects, Rugby Radio Station's transformation into a school by van Heyningen and Haward and St Paul's Cathedral School by Kilburn Nightingale.

Will Ing visits Central Hill estate in London to meet residents who are challenging architects not to demolish it. In a separate news feature we speak to Annabelle Selldorf about the makeover she is planning for the National Gallery Sainsbury Wing.

News In Pictures includes a look at the 2022 Serpentine Pavilion concept from Theaster Gates.

PLUS: Kunle Barker rails against an overly-complex and under-funded planning system, The Secret Architect returns with a retrofit state of mind, David Grandorge ponders the de-carbonisation of construction, AJ Sketchbook entry from Shuahra Rahman, Pierre d'Avoine dicusses his new book about a renovation and retrofit project in the Umbrian hills, letters, competitions and Louis Hellman's monthly cartoon.