| 9 Products | May 2025 | May 2026 | Change |
| Rolson Signature John West No Drain Tuna Chunks In Sunflower Oil (110g) | £3.49 | £3.39 | - £0.10 -2.9% decrease |
| | £3.49 | £3.39 | - £0.10 -2.9% decrease |
| Princes Tuna Chunks in Brine (145g) | £1.00 | £1.00 | £0.00 No change |
| | £1.00 | £1.00 | £0.00 No change |
| John West Tuna Chunks in Brine (125g) | £3.65 | £3.65 | £0.00 No change |
| | £3.65 | £3.65 | £0.00 No change |
| John West Tuna Chunks in Sunflower Oil (132g) | £3.65 | £14.99 | + £11.34 310.7% increase |
| | £3.65 | £14.99 | + £11.34 310.7% increase |
| John West Tuna Chunks In Spring Water (145g) | £3.65 | £3.65 | £0.00 No change |
| | £3.65 | £3.65 | £0.00 No change |
| Princes Tuna Chunks in Sunflower Oil (145g) | £3.00 | £3.00 | £0.00 No change |
| | £3.00 | £3.00 | £0.00 No change |
| John West No Drain Tuna Chunks in Brine with a Little Brine (110g) | £3.49 | £3.39 | - £0.10 -2.9% decrease |
| | £3.49 | £3.39 | - £0.10 -2.9% decrease |
| John West Tuna Chunks in Spring Water with No Drain () | £3.49 | £3.39 | - £0.10 -2.9% decrease |
| | £3.49 | £3.39 | - £0.10 -2.9% decrease |
| Princes Tuna Chunks in Spring Water () | £3.50 | £3.50 | £0.00 No change |
| | £3.50 | £3.50 | £0.00 No change |
