Earlier this month, Labour councillors submitted a motion calling on the regiment to be given the honour.
James Adams, Labour councillor, brought the motion to the full council meeting which called for the honour to be granted to mark the 20th anniversary year of the British Army regiment.
An SNP and Green amendment stated bestowing the city’s “highest honour” upon an organisation was “inherently problematic”.
It added the move would “tie the City of Glasgow in perpetuity to another organisation over which it has no control or oversight”.
The amendment stated the decision was “not a reflection of the Royal Regiment of Scotland or the personnel who serve as part of it”.
There were 28 votes for the motion and 32 for the SNP/Green amendment.
The Prime Minister was asked about the decision in the House of Commons today by Glasgow East Labour MP Maureen Burke.
Maureen Burke (Image: House of Commons)
She said: “It’s a shameful snub to our servicemen and women. The decision has left many Glaswegians feeling ashamed and embarrassed.”
There were cries of “shame” from MPs when Burke highlighted the decision.
She asked: “Does the Prime Minister agree this is an insult to those who serve and will he join me in urging Glasgow City Council to reconsider?”
Starmer replied: “I join in paying tribute to the bravery and sacrifice so f the Royal Regiment of Scotland.
“I have had the privilege of meeting Scots serving in our armed forces across the world.
“They deserve our deepest gratitude.
“I cannot understand how the SNP and Greens have arrived at this decision, particularly when Glaswegians have contributed so much to the Royal Regiment.
“It’s not too late to do the right thing and I urge them to reconsider.”
