On the day Nigel Farage declared this to be our “Independence Day” – with Britain voting to leave the EU – it's one of life’s little ironies that the sequel to the jingoistic 1996 film of the same name arrives in UK cinemas. But maybe it’s more than just a coincidence; maybe, as some people are hoping on social media, it’s all part of some brilliant marketing campaign to promote Independence Day: Resurgence.