| Clue | Source | Date |
|---|---|---|
| Combining art and biology is essential (10) | Puzzler Cryptic | 22 Jul 2025 |
| Legally or morally binding (10) | ||
| Compulsory, binding (10) | ||
| A blog translated about one English politician is required (10) | ||
| Arranged to have biology and art mandatory (10) | ||
| Ordinary student interrupts important American right-winger as required | The Telegraph Toughie | 02 Dec 2021 |
| A girly boot design is essential | The Guardian Cryptic | 15 Nov 2021 |
| A girly boot design is essential | ||
| Unavoidable shortly to do favour for a politician | ||
| Morally or legally constraining | ||
| Not optional |