| 18 Products | May 2025 | May 2026 | Change |
| Idahoan Perfect Mash Snack Pot (55g) | £1.50 | £1.00 | - £0.50 -33.3% decrease |
| | £1.50 | £1.00 | - £0.50 -33.3% decrease |
| Mash Direct Mashed Potato (400g) | £1.85 | £1.85 | £0.00 No change |
| | £1.85 | £1.85 | £0.00 No change |
| Idahoan Classic Mash (109g) | £1.50 | £1.50 | £0.00 No change |
| | £1.50 | £1.50 | £0.00 No change |
| Idahoan Perfect Buttery Mash (109g) | £1.70 | £1.70 | £0.00 No change |
| | £1.70 | £1.70 | £0.00 No change |
| M&S Gastropub Maris Piper Mashed Potato Side () | £3.75 | £4.00 | + £0.25 6.7% increase |
| | £3.75 | £4.00 | + £0.25 6.7% increase |
| | £1.25 | £1.25 | £0.00 No change |
| | £1.25 | £1.25 | £0.00 No change |
| M&S Buttery Mash Potato (450g) | £3.00 | £3.00 | £0.00 No change |
| | £3.00 | £3.00 | £0.00 No change |
| Idahoan Perfect Mash Cheddar Cheese Flavoured (109g) | £1.70 | £1.70 | £0.00 No change |
| | £1.70 | £1.70 | £0.00 No change |
| M&S Colcannon Potato Mash (450g) | £3.00 | £3.00 | £0.00 No change |
| | £3.00 | £3.00 | £0.00 No change |
| Mash Direct Mashed Swede (400g) | £1.75 | £1.75 | £0.00 No change |
| | £1.75 | £1.75 | £0.00 No change |
