Ukraine and Saint Vincent and the Grenadines have launched a visa-free regime, Ukrainian Ambassador to Great Britain Vadym Prystaiko said. "Today with His Excellency, Mr. Cenio Lewis, High Commissioner of Saint Vincent and the Grenadines to the UK, we launched visa-free regime. Step-by- step and all the Commonwealth nations will become visa-free for Ukrainians," Prystaiko wrote on Twitter on Wednesday.