10 November 2018: Box 352 new.

2 November 2018: Michael Back Collection Index.

12 August 2018: Boxes 324 and 336 and drawer G30 updated. Boxes 336 and 549 relocated.

21 July 2018: Box 77J new. Boxes 225A, 225B, 227, 326, 331, 331A, 336A, 337, 337A, 337B, 339, 342, 349, 549, 549A, 549C, 574, 587, 591, 728, 728A, 728B, 745, 916, 923 and 1012 relocated.

13 July 2018: Boxes 325A and 526D updated.

21 May 2018: Box 526D new. Boxes 210B, 225A, 325A, 335, 720A, 728, 913A, 923, 1001 updated.

7 May 2018: Boxes 598, 599 new. Drawers G28, G31 updated.

8 April 2018: Boxes 77B,77C, 77D, 77E, 77F, 77G, 77H, 100, 596, 597 new. Box 594B updated.

22 January 2018: Boxes 594, 595 new. Drawer G31 updated. Box 572 moved.

10 December 2017: Box 593 new.

13 November 2017: Box 933 new, Shelf G28 updated.

9 November 2017: Box 549C, Shelf D32 new. Boxes 73/73A updated.

19 October 2017: Drawers G30, G31 new. Drawers G28, G29 updated.

12 October 2017: Drawers G9, G10, G28, G29 new. Box 549 moved.

30 July 2017: Boxes 225A, 225B, 336A, 549B, 728A, 728B, 749 new. Drawer G15 new. Box 923 updated.

22 July 2017: Boxes 913A, 932 new. Shelf B44 new. Boxes 210B, 325B, 526B, 720A updated.

5 July 2017: Boxes 746, 747, 748, 931 new.

30 June 2017: Archive reopened at new location. Box 351 new. All boxes of weekly and periodical engineering notices have been withdrawn for digitisation.