The release reveals new details in the cases of the Cambridge spies Kim Philby, Anthony Blunt, and John Cairncross, including their confessions, and also sheds light on related cases including Constantin Volkov, and Philby’s first wife Litzi.
Also included are historical reports and other papers from 1909 until 1959, a wartime ‘watchers’ guide offering surveillance advice to MI5 officers, papers related to investigations into the Communist Party of Great Britain, and communications between MI5 and the FBI.
All the files in the release are available to explore, view and download from Discovery, our catalogue.
Some of these files will also be put on display in our upcoming exhibition, MI5: Official Secrets.
Read more about the release in our blog: Confessions from the Cambridge Five.
KV 1: The Security Service: First World War Historical Reports and Other Papers
KV 2: The Security Service: Personal (PF Series) Files
- KV 2/4658 (PDF, 359 MB)
- KV 2/4659 (PDF, 41 MB)
- KV 2/4660 (PDF, 41 MB)
- KV 2/4661 (PDF, 46 MB)
- KV 2/4662 (PDF, 91 MB)
- KV 2/4663 (PDF, 43 MB)
- KV 2/4664 (PDF, 29 MB)
- KV 2/4665 (PDF, 64 MB)
- KV 2/4666 (PDF, 28 MB)
- KV 2/4667 (PDF, 33 MB)
- KV 2/4668 (PDF, 18 MB)
- KV 2/4669 (PDF, 66 MB)
- KV 2/4670 (PDF, 83 MB)
- KV 2/4671 (PDF, 35 MB)
- KV 2/4672 (PDF, 67 MB)
- KV 2/4673 (PDF, 48 MB)
- KV 2/4674 (PDF, 36 MB)
- KV 2/4675 (PDF, 30 MB)
- KV 2/4676 (PDF, 45 MB)
- KV 2/4677 (PDF, 20 MB)
- KV 2/4678 (PDF, 29 MB)
- KV 2/4679 (PDF, 18 MB)
- KV 2/4680 (PDF, 27 MB)
- KV 2/4681 (PDF, 30 MB)
- KV 2/4682 (PDF, 42 MB)
- KV 2/4683 (PDF, 35 MB)
- KV 2/4684 (PDF, 17 MB)
- KV 2/4685 (PDF, 19 MB)
- KV 2/4686 (PDF, 15 MB)
- KV 2/4687 (PDF, 31 MB)
- KV 2/4688 (PDF, 10 MB)
- KV 2/4689 (PDF, 14 MB)
- KV 2/4690 (PDF, 32 MB)
- KV 2/4691 (PDF, 50 MB)
- KV 2/4692 (PDF, 51 MB)
- KV 2/4693 (PDF, 28 MB)
- KV 2/4694 (PDF, 37 MB)
- KV 2/4695 (PDF, 50 MB)
- KV 2/4696 (PDF, 51 MB)
- KV 2/4697 (PDF, 61 MB)
- KV 2/4698 (PDF, 50 MB)
- KV 2/4699 (PDF, 34 MB)
- KV 2/4700 (PDF, 90 MB)
- KV 2/4701 (PDF, 42 MB)
- KV 2/4702 (PDF, 74 MB)
- KV 2/4703 (PDF, 38 MB)
- KV 2/4704 (PDF, 63 MB)
- KV 2/4705 (PDF, 70 MB)
- KV 2/4706 (PDF, 57 MB)
- KV 2/4707 (PDF, 76 MB)
- KV 2/4708 (PDF, 91 MB)
- KV 2/4709 (PDF, 45 MB)
- KV 2/4710 (PDF, 35 MB)
- KV 2/4711 (PDF, 103 MB)
- KV 2/4712 (PDF, 37 MB)
- KV 2/4713 (PDF, 82 MB)
- KV 2/4714 (PDF, 67 MB)
- KV 2/4715 (PDF, 43 MB)
- KV 2/4716 (PDF, 86 MB)
- KV 2/4718 (PDF, 89 MB)
- KV 2/4719 (PDF, 86 MB)
- KV 2/4720 (PDF, 86 MB)
- KV 2/4721 (PDF, 81 MB)
- KV 2/4722 (PDF, 41 MB)
- KV 2/4723 (PDF, 80 MB)
- KV 2/4724 (PDF, 39 MB)
- KV 2/4725 (PDF, 35 MB)
- KV 2/4726 (PDF, 42 MB)
- KV 2/4727 (PDF, 38 MB)
- KV 2/4728 (PDF, 43 MB)
- KV 2/4729 (PDF, 42 MB)
- KV 2/4730 (PDF, 23 MB)
- KV 2/4731 (PDF, 48 MB)
- KV 2/4732 (PDF, 6 MB)
- KV 2/4733 (PDF, 17 MB)
- KV 2/4734 (PDF, 22 MB)
- KV 2/4735 (PDF, 27 MB)
- KV 2/4736 (PDF, 21 MB)
- KV 2/4737 (PDF, 56 MB)
- KV 2/4738 (PDF, 47 MB)
- KV 2/4739 (PDF, 138 MB)
- KV 2/4740 (PDF, 25 MB)
- KV 2/4741 (PDF, 19 MB)
- KV 2/4742 (PDF, 62 MB)
- KV 2/4743 (PDF, 8 MB)
- KV 2/4744 (PDF, 49 MB)
- KV 2/4745 (PDF, 35 MB)
- KV 2/4746 (PDF, 70 MB)
- KV 2/4747 (PDF, 48 MB)
- KV 2/4748 (PDF, 67 MB)
- KV 2/4750 (PDF, 70 MB)
- KV 2/4751 (PDF, 69 MB)
- KV 2/4752 (PDF, 59 MB)
- KV 2/4753 (PDF, 56 MB)
- KV 2/4754 (PDF, 26 MB)
KV 3: The Security Service: Subject (SF series) Files
KV 4: The Security Service: Policy (Pol F Series) Files