Marble Arch Banksy artwork fitted with protective case

The video discusses a new framework and collaboration with the BBC, focusing on protecting a high-profile Banksy artwork. The artwork, created after the Extinction Rebellion protest, attracts global attention. The restoration process faced challenges like removing milkshake and algae, but successfully revealed the artwork's original state.

How did the public's interest in the artwork influence its protection?

What specific substances were removed from the artwork during restoration?