Onyx food hygiene rating
Restaurant/Cafe/Canteen · Hillingdon
Onyx holds a 0, the lowest food hygiene rating possible, meaning urgent improvement is necessary. The inspector found serious problems at the restaurant requiring immediate action.
The rating: 0 - Urgent improvement necessary
The rating dates from 18 March 2026, 3 months ago. Councils typically re-inspect higher-risk businesses every six months to two years, with well-run, low-risk places visited least often, so this is a normal gap.
Address: 233 High Street, UB8 1LE
How it compares in Hillingdon
A 0 is rare: only 16 of 2,007 rated places in Hillingdon score this low, about one in 125. By contrast 64% of the borough holds a 5, so this is well below what the council's inspectors normally find.
| 5 out of 5 | 1,286 | 64% | ||
|---|---|---|---|---|
| 4 out of 5 | 355 | 18% | ||
| 3 out of 5 | 202 | 10% | ||
| 2 out of 5 | 48 | 2% | ||
| 1 out of 5 | 100 | 5% | ||
| 0 out of 5 | 16 | 1% | ← Onyx |
A further 226 businesses in the area are awaiting inspection or exempt, so are not counted above.
What the inspector found
- Hygienic food handling Improvement necessary
- Cleanliness & condition of the building Improvement necessary
- How well they manage food safety Urgent improvement necessary
An inspection scores three things: how food is handled, the physical condition of the premises, and how much the inspector trusts management to keep standards up. At Onyx the inspector recorded concerns over how food is handled, the condition of the premises and confidence in management. Because the overall rating is only ever as strong as its weakest area, that is what holds the score down.
Food hygiene ratings nearby
The closest food businesses to Onyx, nearest first, so you can see how it compares to its neighbours.
| Business | Distance | Rating | Inspected |
|---|---|---|---|
| Afrikana Restaurant/Cafe/Canteen | 229 yards away | 5 - Very good | 25 March 2026 |
| Bella Italia also t/a Super Nonna & Mac n Shack Restaurant/Cafe/Canteen | 252 yards away | 5 - Very good | 10 February 2025 |
| Costa Restaurant/Cafe/Canteen | 259 yards away | 5 - Very good | 4 March 2019 |
| Boots UK Limited Retailers - other | 260 yards away | 5 - Very good | 30 July 2009 |
| Costa Restaurant/Cafe/Canteen | 260 yards away | 5 - Very good | 27 September 2022 |
| Cake Co Other catering premises | 349 yards away | 5 - Very good | 5 May 2026 |
| Black Sheep Coffee Restaurant/Cafe/Canteen | 420 yards away | 5 - Very good | 7 January 2026 |
| Costa Coffee Restaurant/Cafe/Canteen | 0.3 miles away | 5 - Very good | 3 March 2026 |
Questions about Onyx
What is Onyx's food hygiene rating?
Onyx has a food hygiene rating of 0 out of 5 (urgent improvement necessary), given by Hillingdon Council on 18 March 2026.
Is Onyx safe to eat at?
A 0 means urgent improvement is necessary: the inspector found serious problems. The restaurant may still be trading, because a rating is not a closure order, but this is the lowest score the scheme gives.
When was Onyx last inspected?
Onyx was last inspected on 18 March 2026, 3 months ago. Food hygiene inspections are unannounced, and the rating is published by Hillingdon Council rather than by the business.
What did the inspector find at Onyx?
The inspector scored three areas. Hygienic food handling was rated "improvement necessary", the cleanliness and condition of the building "improvement necessary", and confidence in the management of food safety "urgent improvement necessary". Lower concern in all three is what earns a high overall rating.
How does Onyx compare to other places in Hillingdon?
64% of the 2,007 rated food businesses in Hillingdon hold the top rating of 5, while Onyx holds a 0. 16 places in the area share that rating.
Who decides the rating?
Hillingdon Council inspects Onyx and sets the rating; the Food Standards Agency publishes it. Neither the business nor this site can change a rating, a business that disagrees can appeal to its council, and can request a re-inspection once it has fixed the problems.
Tell me when this changes
The Food Standards Agency publishes only a business's rating today, not what it scored before, and not when it moves. We check every UK rating each night. Watch Onyx and we will email you the morning after its rating changes.
Free, for three businesses, forever. No password, we send you a link. How rating alerts work →
Is this your business?
A rating of 0 is public, and most customers look. Only 18% of people say they would order from a business rated 2 or below, against 94% from one rated 4. Delivery platforms may decline to list you.
We cannot change this rating, and nor can you. It was set by an environmental health officer at Hillingdon, and it stands until they inspect again. What you can do:
- Fix what the inspector found, then ask the council for a re-inspection. Most charge between £120 and £316, and will not re-visit within three months of the original inspection.
- If you believe the rating is simply wrong, you have 21 days from being notified to appeal to the council. That is 21 calendar days, not working days.
- You may submit a right to reply at any time. It is published alongside the rating, here, and on the FSA's own site.
What a low rating means → · How re-inspections and appeals work →
Your council: Hillingdon
Understanding this rating
More food hygiene ratings near here
Onyx is one of 399 rated food businesses in Uxbridge. See every hygiene rating in Uxbridge →
Hillingdon inspects and rates 2,233 food businesses across its whole area. See every food hygiene rating in Hillingdon →
The official record is held by the council: http://www.hillingdon.gov.uk/foodsafety
Rating from the Food Standards Agency under the Open Government Licence. Ratings reflect standards found at the time of inspection and can change. If you think a rating is wrong, the official record is held by the FSA and the local authority; corrections there flow through here. How ratings work →