Support in Scotland for independence appears to have risen since the UK formally left the EU

The future of the United Kingdom is on a knife edge with a third poll in days showing at least half of voters in Scotland backing independence.

A survey by Panelbase put support for separation at 52 per cent, with 48 per cent backing the union. The poll was carried out on January 28-31 on behalf of the Scot Goes Pop blog.

Another poll by Survation the week before Britain left the EU found a 50-50 split between those in favour of independence and those wanting to remain part of the UK. That survey of 1,019 voters, commissioned by Progress Scotland, a nationalist think tank, was conducted at about the same time as a YouGov poll that found a narrow majority in favour of independence