Scotland's longest-serving MEP has lost his seat after a collapse in the Labour vote in Scotland. 

Scotland has not yet declared a result with the Western Isles not expected to declare until around 11 am. However, it is unlikely to change the outcome. 

READ MORE: European elections 2019 live results in Scotland 

After losing his seat in Scotland, Labour's David Martin tweeted: "While obviously personally disappointed to lose my seat I'm devastated for the hundreds of good Labour people who put so much into the campaign. We lost not because of lack of effort but lack of clear message."

Mr Martin was until today the longest-serving MEP in the UK and was once vice-president of the European Parliament.

READ MORE: European elections 2019: Every Scottish local authority result 

Paying tribute to the work carried out by David Martin, First Minister Nicola Sturgeon tweeted: "Obviously I’m delighted with the SNP result but genuinely sad for David Martin - he has been an excellent MEP and passionately anti-Brexit. He was one of the very last Labour people who deserved to pay the price for his party’s prevarication."

Scotland's six new MEPs will be the SNP's Alyn Smith, Christian Allard and Aileen McLeod, Louis Stedman-Bruce of the Brexit Party, Sheila Ritchie of the Liberal Democrats and Baroness Nosheena Mobarik of the Conservatives.