In our series, Supermarket Swap, we challenge a family to change where and how they do their weekly grocery shop. Can they save money by trading old habits for new – and will they decide to switch to another supermarket as a result? If you want to take part, email money@inews.co.uk.

This week, we speak to Julianne Ponan, 37, of Surrey, who lives with a series of life-threatening allergies which can send her into anaphylactic shock if she eats the wrong thing. She trusts Tesco for its product range and decent labeling – so can Lidl match up with some safe options – and save Julianne some money, too?

Supermarket Swap

Old supermarket: Tesco

New supermarket: Lidl