EU Membership
| End Date | Company | Client | IN | OUT | DK | Lead |
| 22 Feb 2016 | ICM Online | 42 | 40 | 17 | +2 | |
| 20 Feb 2016 | Survation Phone | Mail on Sunday | 48 | 33 | 19 | +15 |
| 16 Feb 2016 | Ipsos MORI Phone | 54 | 36 | 10 | +18 | |
| 15 Feb 2016 | Kantar TNS Online | 36 | 39 | 25 | +3 | |
| 14 Feb 2016 | ICM Online | 43 | 39 | 18 | +4 | |
| 14 Feb 2016 | ComRes Phone | ITV News | 49 | 41 | 10 | +8 |
| 07 Feb 2016 | ICM Online | 41 | 42 | 17 | +1 | |
| 04 Feb 2016 | YouGov Online | Times | 36 | 45 | 17 | +9 |
| 01 Feb 2016 | Ashcroft | Sun | 50 | 40 | 10 | +10 |
| 31 Jan 2016 | ICM Online | 42 | 39 | 19 | +3 | |
| 28 Jan 2016 | YouGov Online | 38 | 42 | 20 | +4 | |
| 27 Jan 2016 | YouGov Online | 39 | 41 | 17 | +2 | |
| 25 Jan 2016 | BMG Online | 44 | 42 | 14 | +2 | |
| 25 Jan 2016 | ComRes Phone | Daily Mail | 54 | 36 | 10 | +18 |
| 25 Jan 2016 | Ipsos MORI Phone | Evening Standard | 55 | 36 | 9 | +19 |
| 24 Jan 2016 | Opinium Online | Observer | 40 | 41 | 19 | +1 |
| 24 Jan 2016 | ICM Online | 41 | 41 | 18 | Tie | |
| 17 Jan 2016 | ICM Online | 42 | 40 | 17 | +2 | |
| 16 Jan 2016 | Survation Online | Mail on Sunday | 38 | 42 | 21 | +4 |
| 14 Jan 2016 | Panelbase Online | Sunday Times Scot | 42 | 45 | 12 | +3 |
| 10 Jan 2016 | ICM Online | 44 | 38 | 18 | +6 | |
| 20 Dec 2015 | ICM Online | 45 | 38 | 17 | +7 | |
| 18 Dec 2015 | YouGov Online | Times | 41 | 42 | 15 | +1 |
| 14 Dec 2015 | Ipsos MORI Phone | Evening Standard | 53 | 36 | 11 | +17 |
| 13 Dec 2015 | ComRes Phone | Open Europe | 56 | 35 | 8 | +21 |
| 13 Dec 2015 | ICM Online | 42 | 41 | 17 | +1 | |
| 06 Dec 2015 | ICM Online | 43 | 39 | 17 | +4 | |
| 03 Dec 2015 | ORB | Open Europe | 36 | 43 | 21 | +7 |
| 03 Dec 2015 | Survation Online | ADDE | 40 | 42 | 18 | +2 |
| 02 Dec 2015 | Ashcroft | 38 | 47 | 15 | +9 | |
| 29 Nov 2015 | ICM Online | 43 | 39 | 17 | +4 | |
| 24 Nov 2015 | YouGov Online | 41 | 41 | 15 | Tie | |
| 24 Nov 2015 | YouGov Online | 40 | 38 | 22 | +2 | |
| 22 Nov 2015 | ICM Online | 45 | 38 | 17 | +7 | |
| 19 Nov 2015 | ORB | Independent | 39 | 43 | 18 | +4 |
| 17 Nov 2015 | BMG | Evening Standard | 39 | 39 | 22 | Tie |
| 17 Nov 2015 | Survation Online | Leave.EU | 43 | 40 | 18 | +3 |
| 16 Nov 2015 | Survation Online | 42 | 40 | 18 | +2 | |
| 15 Nov 2015 | ICM Online | 43 | 38 | 19 | +5 | |
| 11 Nov 2015 | Survation Online | Leave.EU | 38 | 43 | 19 | +5 |
| 08 Nov 2015 | ICM Online | 46 | 38 | 16 | +8 | |
| 01 Nov 2015 | ICM Online | 44 | 38 | 18 | +6 | |
| 27 Oct 2015 | YouGov Online | 40 | 40 | 17 | Tie | |
| 27 Oct 2015 | BMG | 41 | 39 | 20 | +2 | |
| 25 Oct 2015 | ORB | Independent | 44 | 39 | 17 | +5 |
| 25 Oct 2015 | ICM Online | 45 | 38 | 17 | +7 | |
| 19 Oct 2015 | Ipsos MORI Phone | 52 | 36 | 12 | +16 | |
| 18 Oct 2015 | ICM Online | 44 | 38 | 18 | +6 | |
| 11 Oct 2015 | ICM Online | 45 | 36 | 18 | +9 | |
| 07 Oct 2015 | ICM Online | Vote Leave | 44 | 39 | 17 | +5 |
| 04 Oct 2015 | ICM Online | 42 | 38 | 20 | +4 | |
| 28 Sep 2015 | ComRes Phone | Daily Mail | 55 | 36 | 8 | +19 |
| 27 Sep 2015 | ICM Online | 45 | 38 | 17 | +7 | |
| 22 Sep 2015 | Survation Online | Huffington Post | 43 | 40 | 17 | +3 |
| 22 Sep 2015 | ICM Online | 44 | 37 | 19 | +7 | |
| 18 Sep 2015 | YouGov Online | 38 | 41 | 17 | +3 | |
| 17 Sep 2015 | YouGov Online | Times | 38 | 40 | 16 | +2 |
| 15 Sep 2015 | ICM Online | 43 | 40 | 17 | +3 | |
| 04 Sep 2015 | Survation Online | Daily Mail | 40 | 43 | 17 | +3 |
| 19 Aug 2015 | YouGov Online | 44 | 37 | 16 | +7 | |
| 29 Jul 2015 | YouGov Online | 45 | 37 | 16 | +8 | |
| 06 Jul 2015 | Survation Online | ADDE | 45 | 37 | 18 | +8 |
| 24 Jun 2015 | YouGov Online | 44 | 38 | 16 | +6 | |
| 16 Jun 2015 | Ipsos MORI Phone | Evening Standard | 66 | 22 | 12 | +44 |
| 11 Jun 2015 | YouGov Online | 43 | 36 | 18 | +7 | |
| 02 Jun 2015 | YouGov Online | 42 | 35 | 19 | +7 | |
| 31 May 2015 | ComRes Phone | Daily Mail | 58 | 31 | 11 | +27 |
| 31 May 2015 | ICM Online | 47 | 33 | 20 | +14 | |
| 22 May 2015 | YouGov Online | Sunday Times | 44 | 36 | 17 | +8 |
| 13 May 2015 | Pew | 55 | 36 | 9 | +19 | |
| 05 May 2015 | ComRes Phone | Daily Mail/ITV News | 56 | 34 | 10 | +22 |
| 04 May 2015 | YouGov Online | Sun | 45 | 33 | 18 | +12 |
| 29 Apr 2015 | YouGov Online | Times | 52 | 32 | 16 | +20 |
| 28 Apr 2015 | YouGov Online | 47 | 33 | 17 | +14 | |
| 20 Apr 2015 | YouGov Online | Sun | 45 | 35 | 16 | +10 |
| 12 Apr 2015 | Populus Online | FT | 40 | 39 | 17 | +1 |
| 09 Apr 2015 | Opinium | Observer | 45 | 41 | 14 | +4 |
| 26 Mar 2015 | Panelbase | 49 | 44 | 7 | +5 | |
| 23 Mar 2015 | YouGov Online | Times | 42 | 34 | 20 | +8 |
| 23 Mar 2015 | YouGov Online | Sun | 46 | 36 | 15 | +10 |
| 24 Feb 2015 | YouGov Online | 45 | 37 | 13 | +8 | |
| 23 Feb 2015 | YouGov Online | Sun | 45 | 35 | 17 | +10 |
| 20 Feb 2015 | Opinium | Observer | 41 | 44 | 14 | +3 |
| 26 Jan 2015 | YouGov Online | Sun | 43 | 37 | 15 | +6 |
| 19 Jan 2015 | Kantar TNS | 38 | 34 | 23 | +4 | |
| 19 Jan 2015 | YouGov Online | British Influence | 43 | 38 | 15 | +5 |
| 08 Jan 2015 | Kantar TNS | 37 | 40 | 18 | +3 | |
| 15 Dec 2014 | YouGov Online | Sun | 40 | 39 | 16 | +1 |
| 01 Dec 2014 | YouGov Online | Sun | 42 | 39 | 16 | +3 |
| 26 Nov 2014 | YouGov Online | 38 | 43 | 15 | +5 | |
| 23 Nov 2014 | ComRes | ITV | 32 | 48 | 20 | +16 |
| 21 Nov 2014 | YouGov Online | Sun on Sunday | 40 | 41 | 16 | +1 |
| 21 Nov 2014 | YouGov Online | Sunday Times | 40 | 41 | 15 | +1 |
| 17 Nov 2014 | YouGov Online | Sun | 39 | 39 | 17 | Tie |
| 07 Nov 2014 | Survation Online | Mail on Sunday | 31 | 54 | 15 | +23 |
| 05 Nov 2014 | Survation Online | Mirror | 35 | 49 | 17 | +14 |
| 03 Nov 2014 | YouGov Online | Sun | 38 | 41 | 16 | +3 |
| 31 Oct 2014 | YouGov Online | Sunday Times | 37 | 43 | 16 | +6 |
| 28 Oct 2014 | YouGov Online | Times | 35 | 44 | 16 | +9 |
| 24 Oct 2014 | YouGov Online | Sunday Times | 41 | 40 | 15 | +1 |