Most of us will be too young of course, or not even born, but it may interest some to know what the nation was watching in January 1971 while Terror of the Autons was on air. The figures quoted here are by millions of homes, rather than viewers, so you'd need to at least double them to get number of viewers.

1) This Is Your Life - 8.1m
2) Nearest and Dearest - 7.9m
3) Coronation Street - 7.8m
4) A Family At War - 7.7m
5) Hadleigh - 7.6m
6) Coronation Street - 7.6m
7) News At Ten (ITV) - 7.4m
8) Dixon of Dock Green - 7.3m
9) The World of Whicker - 7.3m
10) On The Buses - 7.2m
11) Softly, Softly - 6.9m
12) News At Ten - 6.9m
13) Laughter In Paradise - 6.8m
14) Six Dates With Barker - 6.7m
15) Z Cars - 6.6m
16) The Rolf Harris Show - 6.6m
17) The Cliff Richard Show - 6.5m
18) Man At The Top - 6.4m
19) Shadow Over Elveron - 6.3m
20) The Val Doonican Show - 6.1m

ITV dominate with 9 of the Top 10. As for the BBC, it's all about police dramas and variety with Rolf, Cliff and Val!