As part of the 10th anniversary celebrations for Early Warning Signs all four signs were brought to Glasgow and installed at various community venues across the city in the run-up to COP26. The green on black sign was installed at The Hidden Gardens. This was the second time the Gardens had hosted a sign, having looked after the yellow on black sign for six months in 2012. For Glasgow Open House Arts Festival on Saturday 25 September 2021, Harrison led a special Bike & Talk event around Glasgow to visit the four signs - from Woodlands Community Garden in the West End to Impact Arts in the East End and then to The Bowling Green and The Hidden Gardens in the Southside.
At the end of October 2021, the 10th anniversary celebrations concluded when all four signs were re-united for first time since the project began at Artsadmin in 2011 as part of a special exhibition at The Mitchell Library in Glasgow during COP26.
It was a pleasure to host Ellie Harrison's Early Warning Sign in The Hidden Gardens in September to October 2021. The artwork fitted subtly into the environment and raised awareness with the Garden visitors in the lead up to COP26. It was brilliant to get another chance to host an Early Warning Sign after being one of the first venues to participate in the project nearly 10 years ago in 2012.