The 2021 elections will shed light on the future of the union, as Scotland and Wales prepare to elect new governments.

For Scotland, a good set of results for the SNP could signal the green light for Indyref2. In Wales, there is potential for Plaid Cymru to prop up Labour with a strong showing in the Senedd. spoke to election expert Sir John Curtice about the state of the union, and who the winners and losers might be in the 2021 elections.