Most voters are in favor of the Union but believe Brexit has made the break-up of the United Kingdom more likely, polling has found. In England, 68% of adults backed the UK status quo followed by 66% in Wales, 59% in Northern Ireland and 52% in Scotland, according to the ICM research. But across the four nations, up to six out of 10 voters said Britain’s exit from the European Union had increased the prospect of the UK splitting up.