By Ben Lucas Capita has been on a mammoth restructuring journey. After amassing a mountain of debt, the outsourcing giant decided to strip back its operations to two core businesses – Capita Public Service and Capita Experience, which provides customer support services to firms – and has gradually worked through selling off its remaining units. This year alone it has sold its travel and events businesses Agiito, messaging and alerting service Pageone and its employment screening firm Security Watchdog. The news this week that it will sell its majority stake in environmental testing and researc…