Allergen matrix (UK): how often to review it and what inspectors expect
An allergen matrix is one of the most important food safety documents in a UK food business. It is how you show which of the 14 allergens are present in your dishes and how you make sure staff can answer allergy questions accurately and consistently.
This guide explains what an allergen matrix should include, how often it should be reviewed, when it must be updated, and what EHOs and inspectors expect to see.
Quick answer
In the UK, an allergen matrix should be reviewed whenever your menu, ingredients, supplier products, recipes, or preparation process changes. It should also be checked routinely even when nothing obvious has changed, so you can prove your allergen information is still accurate and current.
What is an allergen matrix?
An allergen matrix is a structured record showing which of the 14 legally recognised allergens are present in each menu item, dish, component, or recipe. In practice, it is the working document your kitchen and front-of-house team rely on when a customer asks whether a food contains milk, eggs, gluten, nuts, sesame, soy, or another allergen.
A good UK food allergen matrix is not vague. It should clearly map menu items against allergens and reflect how the food is actually prepared and served in your business.
Why an allergen matrix matters
Allergy information is a serious safety issue, not just a paperwork issue. If your allergen information is outdated, incomplete, or wrong, a customer can be given false reassurance and exposed to real harm.
- It helps staff answer allergen questions accurately.
- It gives managers evidence that allergen controls are being maintained.
- It supports due diligence if an inspector asks how allergen information is controlled.
- It reduces the risk of relying on memory, guesswork, or out-of-date recipe knowledge.
What should an allergen matrix include?
There is no single magic format, but most restaurant allergen matrices and takeaway allergen matrices should clearly show:
- Dish or menu item name
- The 14 allergens relevant to the UK rules
- Whether each allergen is present in the finished item
- Date of review or update
- Name or initials of the person who reviewed it
- Version control or review notes if useful
The strongest matrices are not just technically correct. They are easy for staff to trust and use during a busy shift.
The 14 allergens recognised in UK food law
Your allergen matrix should be built around the 14 allergens recognised in UK food information rules. These are:
The exact way you present them can vary, but they need to be covered clearly and consistently.
How often should an allergen matrix be reviewed?
This is one of the most common questions, and the honest answer is simple: an allergen matrix must be reviewed whenever the information could have changed.
That usually means reviewing it:
- Whenever the menu changes
- When ingredients change
- When a supplier changes product or specification
- When a recipe, garnish, sauce, or preparation method changes
- After an allergen-related complaint, incident, or near miss
- At regular review intervals even if nothing obvious has changed
Inspectors do not usually want to see a matrix created once and ignored forever. They expect to see evidence that allergen information is being kept live.
When should you update it immediately?
Some situations should trigger an immediate allergen review rather than waiting for a scheduled check. For example:
- A new dressing, marinade, sauce, batter, breadcrumb, topping, or garnish is added
- A supplier swaps one brand or product for another
- A pre-packed ingredient arrives with a changed allergen declaration
- A recipe is changed to save cost, improve taste, or deal with stock shortages
- Cross-contact risk changes because of new prep methods, storage, or service setup
What inspectors and EHOs expect to see
Inspectors are not just checking that a matrix exists. They want to know whether your allergen information is reliable in practice.
They are likely to look for evidence that:
- The matrix covers the current menu, not an old version
- Reviews are being recorded with dates or version history
- Kitchen and front-of-house staff know how to use it
- Staff do not guess when asked allergen questions
- The allergen matrix matches actual ingredients in use
A matrix that sits in a folder but is not trusted by staff is weaker than a simpler matrix that is reviewed properly and actually used.
Common allergen matrix failures
These are some of the most common reasons allergen documentation looks weak during inspection:
- The matrix exists but has not been reviewed in months
- Supplier or ingredient changes have not been reflected
- Front-of-house staff do not trust the document and ask kitchen staff verbally instead
- There is no record of when it was last checked
- Specials, seasonal items, or amended dishes are missing
- The matrix is too vague to be useful during service
How to prove your allergen matrix is being reviewed properly
The easiest way to prove control is not just having the matrix itself. It is having a visible review trail.
That can include:
- Last reviewed date
- Name or initials of the reviewer
- Notes showing what changed
- Version history if you make frequent updates
- Scheduled review reminders so checks do not quietly expire
Example review note
“Reviewed 25/03/2026 after supplier changed mayonnaise brand on burger sauce. Matrix updated for egg and mustard confirmation. WS”
Paper allergen matrix vs digital allergen records
Paper allergen matrices can work, but they are easy to forget, fail to update, or leave sitting in a folder while the menu moves on. A digital system makes it easier to:
- record when allergen information was last reviewed
- flag when another review is due
- keep current allergen records visible to the right people
- reduce the risk of outdated information hanging around unnoticed
Useful related pages
How TempTake helps
TempTake records when allergen information was last reviewed and flags when it is due again, so reviews do not quietly expire. That makes it easier to keep allergen records current instead of relying on memory and hoping the menu has not drifted.
If you want a cleaner way to manage allergen reviews and show a review trail, TempTake is built to make that process easier for real kitchens.