Jackson enjoyed a dream international debut back in 2010; the replacement fly-half held his nerve to kick a last-gasp penalty against Samoa in his hometown of Aberdeen, handing Scotland a narrow victory over the Pacific Islanders.

32 further caps for his country followed, a tally that included an appearance at the 2011 Rugby World Cup in New Zealand.

The 32-year-old also had the distinction of representing Scotland at the 2018 Commonwealth Games, helping Scotland 7s to a sixth-place finish on Australia’s Gold Coast.

The Glasgow Warriors centurion has played 163 times for the Scotstoun outfit and has scored 499 points.

“It has been one hell of a ride,” Jackson said.

“From school and mini rugby coaches, Sean Lineen giving me the opportunity to sign my first pro contract, all the other coaches, medical teams, back room staff that I have worked with throughout the years, I want to say thank you – you have all played a huge part in my career.

“I’ve been so fortunate to live out my childhood dream of playing rugby, not just professionally but for my country. It’s been a journey that has allowed me to travel the world, make some incredible friends and without doubt has given me some of the happiest days of my life.

“It is not the fairytale ending I may have dreamt about, but I want to say a huge thank you to everyone who has been part of my 14-year journey as it has truly been an incredible one. I have achieved more than I could ever have dreamed of, but it is now time to embrace a new challenge.”