Credit: PA Wherever you go in the UK - it’s just too quiet. The Covid pandemic has brought a silence to our streets which disturbs and disorientates. But underneath those streets, as we emerge battered from this crisis - a political earthquake is brewing. Downing Street is so worried about it, the Prime Minister himself has formed a special committee to try to head it off. After all the turmoil we’ve endured in the past five years, the biggest rupture yet could be coming - the break up of the United Kingdom itself. As Scottish parliamentary elections loom, leading - some believe - to a big SNP win and a second independence referendum; as anger bubbles in Northern Ireland over a Brexit deal which has created a border in the Irish Sea; and as even in Wales there is growing discontent - the Tonight programme has been out and about across the country to try to get a sense of why this United Kingdom feels so disunited.