THE campaign to keep Britain in the European Union must celebrate the achievements of Europe, according to Alex Salmond.

The former First Minister believes the referendum campaign so far on both sides has been dominated by “scaremongering” ranging from “at best puerile and at worst outlandish”.

He has urged voters to ignore the “project fear” elements of the remain campaign and focus on the positive case for staying within the EU.

Mr Salmond, the SNP’s Foreign affairs spokesman gave a speech at the European Policy Centre in Brussels trying to lay out a different approach to the UK Conservative led campaign so far.

He said: “We have 45 days to take this positive message to the voters; not be afraid of celebrating Europe’s achievements , point out where we need to work together more constructively and set the agenda for a new Europe with renewed solidarity and reinvigorated economic progress.

"We want a Europe that prioritises growth and recovery, a Europe which reclaims the concept of a social contact and a Europe that responds with solidarity and humanity when faced with a refugee crisis.”

Mr Salmond said with the very real possibility of a vote to take Britain out of the EU, the remain argument has to be renewed in the final months of the campaign.

He added: “With support for the EU across the UK hanging in the balance, the Prime Minister should reboot the Remain campaign away from Project Fear MK 2. There is an overwhelming need in the UK to reset the debate and focus on a positive campaign to highlight the great achievements of the European ideal."

The EU referendum has big names who were on opposing sides of the Scottish independence referendum arguing for the same outcome.

Mr Salmond, Prime Minister David Cameron and former Prime Minister, Gordon Brown, are all leading advocates of staying in the EU.

In a speech at the British Museum, Mr Cameron warned Britain would regret leaving the EU.

He said: "history teaches us that the stronger we are in our neighbourhood, the stronger we are in the world."

Cameron added that Europe united after the Second World War to create institutions to ensure the “bloodshed” of 1939 to 1945 was avoided.

He said: “Isolationism has never served this country well. Whenever we turn our back on Europe, sooner or later we come to regret it."

Late this week, former Labour Prime Minister, Gordon Brown, will make a speech at the London School of Economics on “Britain: Leading, not leaving, the case for remaining in the European Union.”