Six ways to save in the weekly shop as supermarkets get us to spend more

John Hearne analyses the retail psychology in your weekly grocery shop

TESCO has once again established itself as top dog in the grocery market, retaking pole position from SuperValu over the last three months. There is, however, very little between them. Tesco has 25.2% of the market and SuperValu has 24.8%. Though running third in the race, Dunnes posted the strongest growth of all three in that three month period – and is now sitting on 21.9% of the market.

Aldi and Lidl meanwhile divide 17% more or less equally between them.