M&S 1000 British Wool Pocket Spring Medium Firm Pillowtop Mattress im Test

The M&S 1000 British Wool Pocket Spring Medium Firm Pillowtop Mattress is the cheapest way to get a pillowtop from M&S. It takes the medium-firm 1000 British Wool and adds a pillowtop, and it is sold online in all five UK sizes from £479 for a single (M&S product page).

Construction and feel

M&S lists individually responding pocket springs, a deep layer of British wool and a pure cotton cover. We record it as medium-firm, 6 out of 10, the M&S rating, with the pillowtop adding cushioning at the surface. M&S gives no depth for this model.

Who should choose it

It suits back and side sleepers who like a supportive base but find a flat sprung top hard, and anyone furnishing a 4ft small double, a size the 2500 and higher M&S pillowtops are not sold in. It has one wool layer, where the 2500 Pillowtop has two, so it is the budget route rather than the most cushioned one.

What the pillowtop costs

A Double costs £579, against £429 for the flat-topped 1000 British Wool, so the pillowtop is the whole of the difference.

Regular M&S prices at the time of writing (October 2026).

Buying terms

M&S lists no sleep trial and no guarantee period. Its returns policy names furniture among the items it takes back only under your statutory rights, which for an online purchase you have not seen in person normally means a 14-day cooling-off period, as Citizens Advice explains. Delivery is £15 to the room of your choice, and one customer review on the M&S site gave it 5 out of 5 when we checked.