Snacks producer Sun Valley has installed a peanut-free factory to handle tree nuts such as hazels, ­almonds, walnuts and brazils.

The company's main production facility will continue to process peanuts - still the major part of its business - but the new set-up will ensure there is no cross-contamination between peanuts and tree nuts.

Sun Valley said demand from the food industry for guaranteed peanut-free tree nut products had motivated it to install the new facility.