| Date | Currency | Open | High | Low | Close | A.Close | Day Change | Volume |
|---|---|---|---|---|---|---|---|---|
| 28 May 1981 | GBP | 15.25 | 15.25 | 15.25 | 15.25 | 15.25 | +0.25 (+1.67%) | 100 |
| 27 May 1981 | GBP | 15.25 | 15.25 | 15 | 15 | 15 | -0.5 (-3.23%) | 4,450 |
| 26 May 1981 | GBP | 15.5 | 15.5 | 15.5 | 15.5 | 15.5 | +0.375 (+2.48%) | 500 |
| 22 May 1981 | GBP | 15.25 | 15.25 | 15.125 | 15.125 | 15.125 | -0.125 (-0.82%) | 1,600 |
| 21 May 1981 | GBP | 15.25 | 15.25 | 15.25 | 15.25 | 15.25 | +0.125 (+0.83%) | 250 |
| 20 May 1981 | GBP | 15.125 | 15.125 | 15.125 | 15.125 | 15.125 | 0.0 (0.0%) | 100 |
| 19 May 1981 | GBP | 15.25 | 15.25 | 15.125 | 15.125 | 15.125 | -0.125 (-0.82%) | 5,250 |
| 15 May 1981 | GBP | 15.5 | 15.5 | 15.25 | 15.25 | 15.25 | -0.5 (-3.17%) | 530 |
| 14 May 1981 | GBP | 15.75 | 15.75 | 15.75 | 15.75 | 15.75 | 0.0 (0.0%) | 2,400 |
| 13 May 1981 | GBP | 15.75 | 15.75 | 15.75 | 15.75 | 15.75 | 0.0 (0.0%) | 3,000 |
| 12 May 1981 | GBP | 16 | 16 | 15.75 | 15.75 | 15.75 | -0.25 (-1.56%) | 7,600 |
| 11 May 1981 | GBP | 16 | 16 | 16 | 16 | 16 | 0.0 (0.0%) | 900 |
| 8 May 1981 | GBP | 16 | 16 | 16 | 16 | 16 | 0.0 (0.0%) | 3,000 |
| 7 May 1981 | GBP | 16 | 16 | 16 | 16 | 16 | +0.25 (+1.59%) | 6,214 |
| 6 May 1981 | GBP | 15.75 | 15.75 | 15.75 | 15.75 | 15.75 | -0.25 (-1.56%) | 800 |
| 5 May 1981 | GBP | 16 | 16 | 16 | 16 | 16 | +0.5 (+3.23%) | 1,100 |
| 4 May 1981 | GBP | 15.5 | 16 | 15.5 | 15.5 | 15.5 | 0.0 (0.0%) | 5,200 |
| 1 May 1981 | GBP | 15.5 | 15.875 | 15.5 | 15.5 | 15.5 | -0.375 (-2.36%) | 3,100 |
| 30 Apr 1981 | GBP | 15.875 | 15.875 | 15.875 | 15.875 | 15.875 | +0.375 (+2.42%) | 2,500 |
| 29 Apr 1981 | GBP | 15.5 | 16 | 15.5 | 15.5 | 15.5 | +0.25 (+1.64%) | 2,600 |
| 28 Apr 1981 | GBP | 15.5 | 15.5 | 15.25 | 15.25 | 15.25 | -0.75 (-4.69%) | 1,800 |
| 27 Apr 1981 | GBP | 16 | 16 | 16 | 16 | 16 | -0.25 (-1.54%) | 4,000 |
| 24 Apr 1981 | GBP | 16.25 | 16.25 | 16.25 | 16.25 | 16.25 | +0.625 (+4%) | 6,430 |
| 23 Apr 1981 | GBP | 15.625 | 16 | 15.625 | 15.625 | 15.625 | +0.125 (+0.81%) | 1,200 |
| 22 Apr 1981 | GBP | 15.5 | 15.5 | 15.5 | 15.5 | 15.5 | +0.25 (+1.64%) | 700 |
| 21 Apr 1981 | GBP | 16 | 16 | 15.25 | 15.25 | 15.25 | -0.75 (-4.69%) | 2,900 |
| 20 Apr 1981 | GBP | 16 | 16 | 16 | 16 | 16 | 0.0 (0.0%) | 300 |
| 16 Apr 1981 | GBP | 16 | 16 | 16 | 16 | 16 | 0.0 (0.0%) | 2,800 |
| 15 Apr 1981 | GBP | 16 | 16 | 16 | 16 | 16 | 0.0 (0.0%) | 3,800 |
| 14 Apr 1981 | GBP | 16.125 | 16.125 | 16 | 16 | 16 | -0.125 (-0.78%) | 5,500 |
