Overnight ratings for programmes shown on Thursday 18th March 2021.

Billy Monger's Big Red Nose Day Challenge (BBC One) - 1.8m (10.4%)
The Secret Science Of Sewage (BBC Two) - 1.1m (6.5%)
Piers Morgan's Life Stories (ITV) - 2.3m (13.6%)
Taskmaster (Channel 4) - 1.6m (9.4%)
10 Years Younger In 10 Days (Channel 5) - 1.0m
[Source: Broadcast and others]
Please do not copy and paste ratings to forums without credit. -TVZone