EU Membership
| End Date | Company | Client | IN | OUT | DK | Lead |
| 07 Sep 2018 | Survation Online | Daily Mail | 47 | 46 | 7 | +1 |
| 04 Sep 2018 | YouGov Online | People's Vote | 46 | 42 | 7 | +4 |
| 20 Aug 2018 | YouGov Online | People's Vote | 46 | 41 | 13 | +5 |
| 13 Aug 2018 | Kantar Public Online | 40 | 35 | 25 | +5 | |
| 10 Aug 2018 | BMG Online | 50 | 43 | 7 | +7 | |
| 07 Aug 2018 | YouGov Online | People's Vote | 46 | 40 | 14 | +6 |
| 26 Jul 2018 | YouGov Online | Times | 45 | 42 | 13 | +3 |
| 24 Jul 2018 | YouGov Online | 47 | 41 | 12 | +6 | |
| 20 Jul 2018 | YouGov Online | Sunday Times | 44 | 40 | 16 | +4 |
| 14 Jul 2018 | Deltapoll Online | 45 | 45 | 11 | Tie | |
| 09 Jul 2018 | Kantar Public Online | 40 | 32 | 28 | +8 | |
| 07 Jul 2018 | Survation Online | Mail on Sunday | 49 | 45 | 5 | +4 |
| 27 Jun 2018 | YouGov Online | 44 | 44 | 12 | Tie | |
| 20 Jun 2018 | Survation Online | Good Morning Britian | 50 | 44 | 6 | +6 |
| 11 Jun 2018 | YouGov Online | 45 | 40 | 15 | +5 | |
| 04 Jun 2018 | Survation Online | 48 | 47 | 5 | +1 | |
| 16 May 2018 | Deltapoll Online | 47 | 42 | 11 | +5 | |
| 10 May 2018 | Survation Online | 47 | 47 | 6 | Tie | |
| 30 Apr 2018 | YouGov Online | 45 | 42 | 13 | +3 | |
| 14 Apr 2018 | Survation Online | Mail on Sunday | 47 | 46 | 7 | +1 |
| 08 Apr 2018 | ICM Online | 45 | 44 | 11 | +1 | |
| 06 Apr 2018 | YouGov Online | Best for Britain | 44 | 41 | 15 | +3 |
| 16 Mar 2018 | BMG Online | 49 | 42 | 9 | +7 | |
| 08 Mar 2018 | ORB Online | 44 | 49 | 7 | +5 | |
| 03 Mar 2018 | YouGov Online | 44 | 41 | 14 | +3 | |
| 02 Mar 2018 | ComRes Online | 43 | 46 | 12 | +3 | |
| 16 Feb 2018 | Sky Data Online | 46 | 42 | 13 | +4 | |
| 29 Jan 2018 | Survation Online | 49 | 46 | 6 | +3 | |
| 22 Jan 2018 | YouGov Online | 46 | 42 | 12 | +4 | |
| 19 Jan 2018 | ICM Online | Guardian | 45 | 43 | 12 | +2 |
| 19 Jan 2018 | Sky Data Online | 49 | 41 | 10 | +8 | |
| 11 Jan 2018 | ComRes Online | Daily Mirror | 51 | 43 | 6 | +8 |
| 10 Dec 2017 | ICM Online | 46 | 43 | 11 | +3 | |
| 08 Dec 2017 | BMG Online | 51 | 41 | 8 | +10 | |
| 01 Dec 2017 | Survation Online | Mail on Sunday | 49 | 46 | 6 | +3 |
| 17 Nov 2017 | BMG Online | 45 | 45 | 10 | Tie | |
| 17 Nov 2017 | YouGov Online | 43 | 43 | 14 | Tie | |
| 24 Oct 2017 | YouGov Online | 44 | 40 | 16 | +4 | |
| 20 Oct 2017 | BMG Online | 47 | 44 | 8 | +3 | |
| 20 Oct 2017 | Opinium Online | Observer | 46 | 45 | 9 | +1 |
| 05 Oct 2017 | Survation Online | 49 | 45 | 6 | +4 | |
| 23 Sep 2017 | Survation Online | Mail on Sunday | 46 | 47 | 6 | +1 |
| 22 Sep 2017 | Opinium Online | 45 | 44 | 12 | +1 | |
| 20 Sep 2017 | Survation Online | LabourList | 47 | 47 | 5 | Tie |
| 15 Sep 2017 | Opinium Online | 45 | 45 | 10 | Tie | |
| 15 Sep 2017 | BMG Online | 47 | 43 | 10 | +4 | |
| 18 Aug 2017 | Opinium Online | 47 | 44 | 9 | +3 | |
| 11 Aug 2017 | BMG Online | 46 | 45 | 9 | +1 | |
| 24 Jul 2017 | YouGov Online | 46 | 43 | 11 | +3 | |
| 15 Jul 2017 | Survation Online | Mail on Sunday | 47 | 47 | 6 | Tie |
| 14 Jul 2017 | BMG Online | 46 | 45 | 9 | +1 | |
| 30 Jun 2017 | YouGov Online | 46 | 42 | 13 | +4 | |
| 30 Jun 2017 | Survation Phone | 52 | 44 | 5 | +8 | |
| 21 Jun 2017 | Panelbase Online | Sunday Times | 46 | 50 | 4 | +4 |
| 17 Jun 2017 | Survation Online | 50 | 48 | 3 | +2 | |
| 10 Jun 2017 | Survation Online | Mail on Sunday | 48 | 46 | 6 | +2 |
| 07 Jun 2017 | Panelbase Online | 46 | 51 | 3 | +5 | |
| 05 Jun 2017 | BMG Online | 47 | 44 | 9 | +3 | |
| 01 Jun 2017 | Panelbase Online | 47 | 49 | 4 | +2 | |
| 30 May 2017 | Kantar TNS Online | 35 | 38 | 27 | +3 | |
| 22 May 2017 | BMG Online | 45 | 45 | 10 | Tie | |
| 15 May 2017 | Panelbase Online | 47 | 50 | 3 | +3 | |
| 09 May 2017 | Panelbase Online | 47 | 49 | 4 | +2 | |
| 02 May 2017 | Panelbase Online | 48 | 49 | 3 | +1 | |
| 24 Apr 2017 | BMG Online | 45 | 45 | 10 | Tie | |
| 24 Apr 2017 | Panelbase Online | 46 | 50 | 4 | +4 | |
| 31 Mar 2017 | BMG Online | 46 | 46 | 8 | Tie | |
| 30 Mar 2017 | YouGov Online | 44 | 43 | 14 | +1 | |
| 24 Feb 2017 | BMG Online | 45 | 46 | 9 | +1 | |
| 24 Jan 2017 | YouGov Online | 43 | 44 | 13 | +1 | |
| 09 Jan 2017 | BMG Online | 44 | 45 | 11 | +1 | |
| 21 Dec 2016 | YouGov Online | 44 | 43 | 7 | +1 | |
| 18 Dec 2016 | ComRes Online | CNN | 45 | 47 | 8 | +2 |
| 09 Dec 2016 | BMG Online | 43 | 46 | 11 | +3 | |
| 27 Nov 2016 | ComRes Online | Daily Mirror | 46 | 47 | 6 | +1 |
| 25 Nov 2016 | BMG Online | 43 | 43 | 14 | Tie | |
| 25 Oct 2016 | YouGov Online | 44 | 43 | 7 | +1 | |
| 24 Oct 2016 | BMG Online | 45 | 43 | 12 | +2 | |
| 12 Oct 2016 | Survation Online | ITN | 44 | 44 | 12 | Tie |
| 20 Sep 2016 | YouGov Online | 42 | 46 | 6 | +4 | |
| 09 Sep 2016 | YouGov Online | 43 | 45 | 13 | +2 | |
| 22 Jul 2016 | YouGov Online | 43 | 44 | 6 | +1 | |
| 04 Jul 2016 | YouGov Online | 45 | 45 | 10 | Tie | |
| 04 Jul 2016 | YouGov Online | 45 | 45 | 6 | Tie | |
| 30 Jun 2016 | Opinium Online | 48 | 42 | 9 | +6 | |
| 30 Jun 2016 | BMG Phone | Evening Standard | 45 | 37 | 13 | +8 |
| 23 Jun 2016 | Ipsos MORI Phone | 47 | 39 | 1 | +8 | |
| 23 Jun 2016 | YouGov Online | 48 | 45 | 6 | +3 | |
| 22 Jun 2016 | Populus Online | 55 | 45 | +10 | ||
| 22 Jun 2016 | Ipsos MORI Phone | Evening Standard | 49 | 46 | 1 | +3 |
| 22 Jun 2016 | YouGov Online | Times | 45 | 45 | 8 | Tie |
| 22 Jun 2016 | ComRes Phone | Daily Mail/ITV News | 48 | 42 | 11 | +6 |
| 22 Jun 2016 | Kantar TNS Online | 41 | 43 | 16 | +2 | |
| 22 Jun 2016 | SurveyMonkey Online | Washington Post | 50 | 47 | 3 | +3 |
| 22 Jun 2016 | Opinium Online | 44 | 45 | 9 | +1 | |
| 20 Jun 2016 | SurveyMonkey Online | NBC | 48 | 49 | 3 | +1 |
| 20 Jun 2016 | Survation Phone | IG | 45 | 44 | 11 | +1 |
| 19 Jun 2016 | YouGov Online | Times | 42 | 44 | 9 | +2 |
| 19 Jun 2016 | ORB Phone | Telegraph | 49 | 47 | 4 | +2 |
| 18 Jun 2016 | YouGov Online | Sunday Times | 44 | 43 | 9 | +1 |