Door 4 · New every Monday

The Weekly Supermarket Checkout, Decoded.

Britain’s top-selling supermarket products each week, label-decoded into teaspoons of sugar and sachets of salt — the same engine the KiP app runs. Paired with the I500 alternatives from independent shops that beat them on the numbers that matter. Free. Every Monday morning. No subscription required.

Latest entry

This week’s Checkout.

Inaugural · launching Monday 5 May 2026

The first Weekly Supermarket Checkout, Decoded launches here.

Built from the live in-store audit running every Monday morning. Each entry decodes the top-selling supermarket products into teaspoons and sachets, surfaces the surprise high-sugar / high-salt finds, and pairs each with one or two I500 alternatives from independent shops where a better swap exists.

Sample entry shape (preview format)

ProductBrandVerdictSugar (tsp)Salt (sachets)
(example: top-selling cereal)(brand)Red4.20.5
(example: low-fat yogurt)(brand)Red4.00.1
(example: stir-in pasta sauce)(brand)Amber2.52.8

The I500 counterpoint: from an independent shop in (neighbourhood), an alternative product comes in at half the sugar and a quarter of the salt. Linked to the shop’s entry in the I500 Shop Directory.

Method: manufacturer labels, decoded into teaspoons (4g sugar = 1 tsp) and sachets (0.6g salt = 1 sachet) using the same engine as the KiP app. Top-sellers verified weekly from in-store audit logs across South London supermarkets.

Why this exists

The package doesn’t want you to notice.

Front-of-pack marketing optimises for the message that sells. The actual nutritional reality lives on the back — in grams per 100g, in additives by name, in sugar disguised as 60+ different terms. The Weekly Supermarket Checkout, Decoded reads what’s on the back, every week, for the products Britain actually buys.

Not as outrage-marketing. As plain-language reporting on what’s on the shelf. The supermarkets aren’t hiding the data; they’re hiding the language. ScanSmart’s job is the language.

Every entry pairs the supermarket findings with I500 counterpoints — not as “here’s the better product” advertorial, but as proof that better products exist, where they exist, and at what price. The reader can choose; the data can be checked. That’s the deal.

Get it Monday morning

Email digest, every Monday.

One email a week. The headline finding, the top three put-back-worthy SKUs, the I500 counterpoint, a link to the full entry. Nothing else. Unsubscribe in one click. We never sell email lists; the privacy posture is at /privacy.

Past weeks

Archive.

Past entries archive permanently at dated URLs. Once the inaugural entry ships on 5 May 2026, this section becomes the chronological index of every weekly Checkout. Each URL works in perpetuity.

Archive starts 5 May 2026The first weekly entry publishes Monday 5 May 2026. From then on, every Monday adds an entry; past entries stay at their dated permalinks (e.g. /checkout/2026-05-05) and never change.