Remgro and Investment Holding Limited (IHL) have signed an implementation agreement to restructure their shared interests in Mediclinic Holdings. The move would split the combined group along geographic lines. Remgro would become the sole owner of Mediclinic Southern Africa (MCSA). IHL would take 100% of Hirslanden, Mediclinic’s Swiss business. Remgro, chaired by Johann Rupert, and IHL currently each hold 50%…