Caroline Lucas could hold the key to a new Government power-sharing agreement.

As party leaders try to thrash out an agreement on who should run the country, the new Brighton Pavilion member of parliament could be part of the solution.

The Scottish National Party and Plaid Cymru have called for a 'progressive alliance' government involving all of the minority parties.

The left-wing nationalists have suggested joining forces with Labour and the Liberal Democrats to form the Government to form a so-called 'rainbow alliance' and have invited Caroline Lucas, as leader of the Green Party, on board.

Dr Lucas told The Argus she wanted to look at the finer details of any proposal but broadly welcomed the idea of working together.

The SNP and Plaid Cymru (the Party of Wales) announced their hopes for a “progressive alliance” on Saturday as David Cameron, Nick Clegg and Gordon Brown failed to come to any agreement on who should form the Government.