2nd session of the 45th Parliament of the United Kingdom
2 November 1971 - 26 October 1972
| Parliament | 45th |
| Citation by calendar years | 1971-72 |
| Citation by regnal years | 20 & 21 Eliz. 2 |
| Wikidata ID | Q108991046 |
Regnal years
| Regnal year | Start date | End date |
| 20 Eliz. 2 | 6 February 1971 | 5 February 1972 |
| 21 Eliz. 2 | 6 February 1972 | 5 February 1973 |