Best Prime Minister
| End Date | Company | Client | CON | LAB | OTH | DK | Lead |
| 05 Oct 2017 | YouGov Online | Times | 36 | 33 | 32 | +3 | |
| 29 Sep 2017 | BMG Online | Independent | 30 | 32 | 38 | +6 | |
| 24 Sep 2017 | YouGov Online | Times | 37 | 29 | 33 | +4 | |
| 22 Sep 2017 | Opinium Online | 36 | 26 | 28 | 10 | +8 | |
| 18 Sep 2017 | Ipsos MORI Phone | 45 | 38 | 10 | 6 | +7 | |
| 15 Sep 2017 | Opinium Online | Observer | 36 | 28 | 26 | 11 | +8 |
| 31 Aug 2017 | YouGov Online | Times | 37 | 32 | 31 | +5 | |
| 22 Aug 2017 | YouGov Online | Times | 37 | 33 | 31 | +4 | |
| 18 Aug 2017 | Opinium Online | 34 | 30 | 27 | 9 | +4 | |
| 11 Aug 2017 | BMG Online | Independent | 32 | 33 | 33 | Tie | |
| 01 Aug 2017 | YouGov Online | Times | 37 | 32 | 30 | +5 | |
| 19 Jul 2017 | YouGov Online | Times | 37 | 32 | 30 | +5 | |
| 18 Jul 2017 | Ipsos MORI Phone | 46 | 38 | 10 | 6 | +8 | |
| 15 Jul 2017 | Survation Online | Mail on Sunday | 43 | 35 | 21 | +8 | |
| 14 Jul 2017 | Opinium Online | 36 | 33 | 22 | 9 | +3 | |
| 11 Jul 2017 | YouGov Online | Times | 38 | 33 | 29 | +5 | |
| 30 Jun 2017 | Survation Phone | 44 | 38 | 19 | +6 | ||
| 29 Jun 2017 | Opinium Online | Observer | 35 | 34 | 23 | 8 | +1 |
| 22 Jun 2017 | YouGov Online | Times | 34 | 35 | 30 | +1 | |
| 10 Jun 2017 | YouGov Online | Times | 39 | 39 | 22 | Tie |