Peanuts are legumes. The regulated tree-nut category covers eight specifically named nuts. A person may be allergic to peanuts, one or more tree nuts, both groups, or another food entirely; only a qualified clinician can diagnose an allergy and advise on personal avoidance.

Separate category 01

Peanuts

Peanuts—sometimes called groundnuts—must be declared separately when used as an ingredient.

Separate category 02

Tree nuts

The particular regulated nut should be named. A vague reference to “nuts” does not give the same clarity as identifying the actual nut involved.

The eight named tree nuts

  • 01Almond
  • 02Hazelnut
  • 03Walnut
  • 04Cashew
  • 05Pecan
  • 06Brazil nut
  • 07Pistachio
  • 08Macadamia

Other foods with “nut” in their everyday name are not automatically part of this regulated tree-nut group. That does not mean nobody can be allergic to them; it means the mandatory category is specifically defined.

What clearer information looks like

  • An ingredients list that clearly emphasises peanut, cashew or the other particular regulated allergen used.
  • A precautionary warning that identifies the relevant allergen rather than relying on an unclear blanket statement.
  • Online and app filters that distinguish peanut from individual tree-nut risks.
  • Staff who can check current recipes, substitutions and cross-contact controls without guessing.

Personal medical advice matters

Legal categories do not define your diagnosis.

Do not use this page to add or remove foods from an avoidance plan. If you think you may have an allergy, speak to a GP or qualified allergy service. Follow your prescribed emergency plan and carry medication as directed.

Questions for a food business

  • Does this contain peanut, and does it contain any of the named tree nuts?
  • Which particular tree nut is involved?
  • Has the recipe, supplier or preparation process changed?
  • Is shared equipment used, and what controls are in place?
  • Can someone responsible verify the current information?

Evidence base

Official sources