Hong Kong’s overall prime office vacancy rate fell to a seven-month low in May, driven by spillover demand from Central, where premium offices were close to full occupancy, according to JLL.With Central’s grade A office vacancy rate holding steady at 9.2 per cent, tenants appeared to have found their way to neighbouring Wan Chai and Causeway Bay. Vacancy there edged down to 9.8 per cent in May from 10.4 per cent in April, the lowest in 10 months, the property consultancy said in its latest...