A council’s headquarters will be unusable for more than two years until it’s made safe, costing £20 million – but despite questions from residents, councillors say it’s the right choice. An update on the situation around Medway Council’s closed HQ Gun Wharf revealed a full understanding of the state of the problems won’t be achieved until the end of this financial year. The work to remove the reinforced autoclaved aerated concrete (RAAC), which was discovered in October, will then take 18 months to complete – however, this will also include refurbishment works to make the building more of a pu…