By Maria Ward-Brennan Campaigners are seeking to overturn the former government’s decision to green-light the redevelopment of London’s South Bank at the High Court this week. The Secretary of Levelling Up, Housing and Communities, Michael Gove, granted Mitsubishi Estate planning permission earlier this year to transform 72 Upper Ground, the old headquarters of ITV. The site, named ‘The Slab,’ has been vacant since 2018. Mitsubishi’s proposed plans are to transform it into offices, retail units, and an arts and culture space, opening in 2028. The London Borough of Lambeth granted developers Le…