| Clue | Source | Date |
|---|---|---|
| Advanced technology struck London city area (2-3) | ||
| Success by European Commission using modern electronic equipment | The Times Quick Cryptic | 14 Mar 2025 |
| Sophisticated architectural walls | The Telegraph Toughie | 24 Jan 2025 |
| Curious ethic in advanced technology (2-3) | ||
| Involving high investment in research and development | The Telegraph General Knowledge | 21 Jul 2019 |