Care home operator Porthaven Group experienced a 217% spike in turnover for the year ended 31 March 2013, with revenues growing from £2.3m to £7.3m. However, due to £8.3m in operating expenses, however, the operator, which is still in start-up mode, recorded an operating loss of £1m (2012: £1.4m). Interest payments including £2.8m on loan…