| 22 Products | Mar 2024 | Mar 2025 | Change |
| Idahoan Perfect Mash Snack Pot (55g) | £1.00 | £1.00 | £0.00 No change |
| | £1.00 | £1.00 | £0.00 No change |
| M&S Buttery Mash Potato (225g) | £2.25 | £2.25 | £0.00 No change |
| | £2.25 | £2.25 | £0.00 No change |
| Mash Direct Mashed Potato (400g) | £1.65 | £1.75 | + £0.10 6.1% increase |
| | £1.65 | £1.75 | + £0.10 6.1% increase |
| 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) | £1.50 | £1.50 | £0.00 No change |
| | £1.50 | £1.50 | £0.00 No change |
| M&S Gastropub Maris Piper Mashed Potato Side (450g) | £3.75 | £3.75 | £0.00 No change |
| | £3.75 | £3.75 | £0.00 No change |
| | £1.25 | £1.00 | - £0.25 -20% decrease |
| | £1.25 | £1.00 | - £0.25 -20% decrease |
| M&S Buttery Mash Potato (450g) | £3.00 | £2.50 | - £0.50 -16.7% decrease |
| | £3.00 | £2.50 | - £0.50 -16.7% decrease |
| Idahoan Perfect Mash Cheddar Cheese Flavoured (109g) | £1.50 | £1.50 | £0.00 No change |
| | £1.50 | £1.50 | £0.00 No change |
| M&S Colcannon Potato Mash (450g) | £2.80 | £3.00 | + £0.20 7.1% increase |
| | £2.80 | £3.00 | + £0.20 7.1% increase |
