Conversation so far:
What happened during the survival of At Last the 1948 show episodes?
Thames Television wiped the material once they had acquired the Rediffusion London archive, and all but two episodes were destroyed.
Did many people watch the At Last the 1948 Show compilation episodes?

Question: What else happened during the Survival of episodes?
Self-contained rewrite: What else happened during the Survival of episodes besides the destruction of At Last the 1948 Show material?