In a bitter row over the sovereignty of Gibraltar, Spain has threatened to block visa-free access to the EU for Britons. Madrid refuses to back down on a controversial description of Gibraltar. Spain has made numerous attempts to use Brexit in its efforts to snatch back sovereignty of the Rock from Britain. Prime minister Pedro Sanchez faces a general election on 28 April. The British government maintains that Gibraltar is not a colony, and will continue to defend its overseas territory. During a meeting of EU ambassadors earlier this month, Sir Tim Barrow, the UK’s permanent EU representative, battled with his counterparts in protest at the move to brand the Rock a ‘colony’. ‘Gibraltar is not a colony, and it is completely inappropriate to describe it in this way. Gibraltar is a full part of the UK family’, he stated.