Heinz is expanding its Squeeze & Stir soup range with three WeightWatchers lines.

The 70g single-serving packs (rsp: 59p) contain no artificial colours, flavours, preservatives or MSG. The vegetable soup contains one ProPoint, and the tomato and red Thai chicken soups contain two ProPoints each.

The Squeeze & Stir format, launched in 2011, is a squeezy tube containing a concentrated purée that must be mixed with hot water.