| LUMON | With 28-Across, company with nine core principles |
| TENETS | Core principles and when parsed differently, what you'll find across all of the answers to the starred clues |
| KEYNOTES | Try to defend Blair over core principles (8) |
| ORAL | Unwritten core principles of right and wrong |
| LIBERALARTS | Core principles? |
| KIDNEYSTONE | Calculus papers, any number in core principle of policy |
| TENET | Core principle of two 20th-century films |
| KEYSTONE | Core principle - to Keynes (anag) (8) |
| BASIS | Core principle |
| PAYNE | With 20-Across, company in "American Auto" |
| AQUA | With 121-Across, company that sells scuba gear |
| FIRST | And 7 Across Company that operates the TransPennine Express franchise (5,5) |
| FIRE | With 15-Across, station with a hook and ladder With 16-Across, indoor chores With 28-Across, tireless sort Particle for Fermi Out-of-use anesthetic |
| MORGAN | And 21 Across Company appointed to build six new stations on the Northumberland line (6,7) |
| SHELL | (and 27 across) Company you get if you enter 71077 345 on a 13 down (5) |
| OURSTARSINGSIT | With 28 Across, reason given by 46 Across for wanting to cut 57 Across |
| MANDY | With 28-Across, "This Is Us" actress who will star with 1-Across |
| SNOOPDOGGS | With 28-Across: three-part docuseries that premieres tomorrow night on E! (it deals with 1- and 5-Across's wedding plans and life afterwards) |
| BATOUT | With 28-Across, debut album by 7-Across |
| TOUCH | With 28 Across, get offline ... and what 13 and 20 Across do? |
