In London potatoes cost £0.45 per lb. In Dublin potatoes cost €1.48 per kilogram.

1 kg=2.2 lbs£1=€1.15 \begin{aligned} 1 \text{ kg} &= 2.2 \text{ lbs} \\ £1 &= €1.15 \end{aligned} 1 kg£1​=2.2 lbs=€1.15​

In which city are potatoes better value for money, London or Dublin? You must show your working.