Diet Coke 18 x 330ml
Prices last checked:
Cheapest at
ASDA
£6.64
for 18 x 330ml
Save £4.61 (41%) vs most expensive store
All Prices
£1.18/per litre
£1.12/per litre
£1.89/per litre
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Lowest ever: £6.00 at Co-opCheaper Alternatives
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Diet Coke 18 x 330ml Price Comparison
Compare Diet Coke 18 x 330ml prices across 4 UK supermarkets. Currently cheapest at ASDA for £6.64, compared to £11.25 elsewhere — a saving of £4.61. Available at Morrisons, ASDA, Co-op, Ocado. Lowest recorded price: £6.00 at Co-op. Prices updated 26 August 2026.
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