| Date | Currency | Open | High | Low | Close | A.Close | Day Change | Volume |
|---|---|---|---|---|---|---|---|---|
| 31 May 1991 | GBX | 640 | 643 | 636 | 637 | 3,178.6687 | -6 (-0.93%) | 0 |
| 30 May 1991 | GBX | 643 | 648 | 643 | 643 | 3,208.6091 | -5 (-0.77%) | 0 |
| 29 May 1991 | GBX | 653 | 653 | 648 | 648 | 3,233.5594 | -2 (-0.31%) | 0 |
| 28 May 1991 | GBX | 645 | 650 | 645 | 650 | 3,243.5395 | +1 (+0.15%) | 0 |
| 24 May 1991 | GBX | 647 | 649 | 646 | 649 | 3,238.5494 | +1 (+0.15%) | 0 |
| 23 May 1991 | GBX | 645 | 648 | 644 | 648 | 3,233.5594 | +4 (+0.62%) | 0 |
| 22 May 1991 | GBX | 656 | 656 | 644 | 644 | 3,213.5991 | -9 (-1.38%) | 0 |
| 21 May 1991 | GBX | 653 | 656 | 653 | 653 | 3,258.5097 | +1 (+0.15%) | 0 |
| 20 May 1991 | GBX | 650 | 654 | 650 | 652 | 3,253.5196 | -3 (-0.46%) | 0 |
| 17 May 1991 | GBX | 658 | 661 | 655 | 655 | 3,268.4898 | -6 (-0.91%) | 0 |
| 16 May 1991 | GBX | 658 | 661 | 658 | 661 | 3,298.4302 | +2 (+0.30%) | 0 |
| 15 May 1991 | GBX | 658 | 659 | 658 | 659 | 3,288.4501 | +1 (+0.15%) | 0 |
| 14 May 1991 | GBX | 660 | 661 | 658 | 658 | 3,283.46 | -3 (-0.45%) | 0 |
| 13 May 1991 | GBX | 668 | 668 | 661 | 661 | 3,298.4302 | -8 (-1.20%) | 0 |
| 10 May 1991 | GBX | 665 | 670 | 665 | 669 | 3,338.3507 | -1 (-0.15%) | 0 |
| 9 May 1991 | GBX | 668 | 670 | 668 | 670 | 3,343.3407 | +1 (+0.15%) | 0 |
| 8 May 1991 | GBX | 673 | 673 | 668 | 669 | 3,338.3507 | -1 (-0.15%) | 0 |
| 7 May 1991 | GBX | 663 | 673 | 663 | 670 | 3,343.3407 | +5 (+0.75%) | 0 |
| 3 May 1991 | GBX | 673 | 675 | 665 | 665 | 3,318.3904 | -8 (-1.19%) | 0 |
| 2 May 1991 | GBX | 678 | 678 | 673 | 673 | 3,358.3109 | -1 (-0.15%) | 0 |
| 1 May 1991 | GBX | 676 | 678 | 674 | 674 | 3,363.301 | -3 (-0.44%) | 0 |
| 30 Apr 1991 | GBX | 678 | 678 | 675 | 677 | 3,378.2711 | +2 (+0.30%) | 0 |
| 29 Apr 1991 | GBX | 663 | 675 | 663 | 675 | 3,368.291 | -4 (-0.59%) | 0 |
| 26 Apr 1991 | GBX | 678 | 680 | 675 | 679 | 3,388.2513 | -1 (-0.15%) | 0 |
| 25 Apr 1991 | GBX | 683 | 684 | 680 | 680 | 3,393.2413 | -2 (-0.29%) | 0 |
| 24 Apr 1991 | GBX | 673 | 682 | 673 | 682 | 3,403.2215 | +8 (+1.19%) | 0 |
| 23 Apr 1991 | GBX | 658 | 675 | 658 | 674 | 3,363.301 | +14 (+2.12%) | 0 |
| 22 Apr 1991 | GBX | 653 | 668 | 650 | 660 | 3,293.4401 | +10 (+1.54%) | 0 |
| 19 Apr 1991 | GBX | 648 | 653 | 648 | 650 | 3,243.5395 | -8 (-1.22%) | 0 |
| 18 Apr 1991 | GBX | 648 | 660 | 648 | 658 | 3,283.46 | +8 (+1.23%) | 0 |
