A list is a product
When an app presents an ordered list of places to order from, it is presenting the output of a ranking system. The order is a designed thing, produced by weighting inputs, and it will differ between two users in the same street at the same moment.
This is worth stating plainly, because a vertical list of names reads as a neutral enumeration in a way that, for example, an advertisement does not. The presentation format carries an implication of objectivity that the underlying mechanism does not support.
This publication names no platform and makes no claim about how any specific company ranks. What follows is the general anatomy of a ranking system of this kind.
What typically goes into a ranking
Ranking systems in this category generally combine three families of input.
Logistical inputs. Distance, estimated delivery time, current availability, whether the kitchen is open, courier supply in the area. These are the inputs that make the list usable at all.
Performance inputs. How often listings are clicked and converted into orders, cancellation and rejection rates, preparation time accuracy, customer ratings, and repeat ordering. These are behavioural and they compound: a listing shown higher gets more orders, which improves its metrics, which supports a higher position.
Commercial inputs. The commission rate or tier a business has agreed, participation in platform-funded offers, and paid promotion or sponsored placement.
The third family is where the consumer interest lies, because it is the one that has nothing to do with the quality or convenience of the option being presented.
| Family | Examples | Relevant to the consumer's interest |
|---|---|---|
| Logistical | Distance, delivery time, availability, courier supply | Yes, directly |
| Performance | Conversion, cancellations, accuracy, ratings, repeat ordering | Partly, and it compounds through a feedback loop |
| Commercial | Commission tier, promotion participation, paid placement | Only through the disclosure requirement |
| Displayed rating | Aggregated consumer reviews | Yes, but it covers the whole delivery experience |
| Hygiene rating | Published inspection outcome | Yes, and it is available from the regulator |
Structure set out by this newsroom from the published rules named in the sources below. It is not a survey, a measurement or a market study.
What the law requires
UK consumer protection law, now principally the Digital Markets, Competition and Consumers Act 2024, prohibits unfair commercial practices, including misleading actions and misleading omissions, and contains a list of practices banned in all circumstances.
Among the banned practices is providing search results in response to a consumer's search query without clearly disclosing any paid advertisement or payment specifically for achieving a higher ranking. That provision is directly aimed at exactly this situation.
Separately, the general prohibition on misleading omissions bites where material information that a consumer needs is omitted or presented unclearly. Whether the parameters that determine an ordering are material information is a question that turns on the effect on the consumer's decision.
The practical consequence is that the disclosure of paid prominence is not optional, while the full disclosure of a ranking algorithm is not generally required. A shopper is entitled to know that a position was paid for, not to know the whole weighting.
The feedback loop, which is the underrated part
The most consequential property of behavioural ranking is that it is self-reinforcing.
A listing placed higher receives more impressions, which produces more orders, which improves the metrics the ranking uses, which supports the position. A listing placed lower receives fewer impressions and its metrics decline relative to competitors regardless of whether anything about it changed.
This means an initial placement decision, however it was made, has consequences that outlast its own justification. It also means that a paid boost is not a one-off purchase of visibility. It is an intervention in a feedback loop that continues afterwards.
Nothing about this is unlawful and nothing about it requires bad intent. It is a property of systems that use behavioural signals, and it is why the disclosure question matters more than it would in a static list.
Ratings, which are a separate mechanism
The rating displayed beside a listing is not the ranking, though the two interact. A rating is an aggregate of consumer reviews, and it has its own well-known properties: heavy skew towards the extremes, small samples for newer listings, and vulnerability to manipulation.
The DMCC Act addresses fake reviews directly. It is a banned practice to submit or commission fake reviews, and also to publish consumer reviews without taking reasonable and proportionate steps to prevent fake reviews from appearing. That second limb places an obligation on the platform rather than only on the person writing the review.
A separate point applies specifically to food: a delivery rating aggregates the ordering experience, which includes packaging, temperature on arrival, courier performance and accuracy of the order. Those are not all attributable to the kitchen, and a rating does not separate them.
Reading a platform list
Three habits help. Look for the paid or sponsored label, which is the disclosure the law requires and which is usually present but not prominent. Sort deliberately rather than accepting the default, since the default is the ranking. And treat the rating as an aggregate of a whole delivery experience rather than as a judgement about the food.
For hygiene, the food hygiene rating is the relevant published record, and it is available from the Food Standards Agency search rather than from a platform listing.
Where this stops
This article describes a category of system. It names no platform, no restaurant and no company, quotes no commission rate, and makes no claim about how any specific business ranks. Complaints about ranking disclosure fall under consumer protection law and go to trading standards or, for widespread practices, the Competition and Markets Authority.
Elsewhere on Feedworthy. What the National Food Crime Unit does. Use by and best before: one is a safety instruction, the other is not.