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How Set Trader uses your data

Version 2026-10-07.5. This notice explains what personal data we collect, why, who we share it with, how long we keep it and your rights under UK data protection law (UK GDPR and the Data Protection Act 2018).

Draft.The company details in square brackets must be filled in, and this notice reviewed by a solicitor, before launch.

1. Who we are

Set Trader is run by [Company name] Ltd (company number [company number]), [registered office address]. We are the controller of your personal data and are registered with the Information Commissioner's Office under number [ICO registration number].

For anything about your data, email hello@settrader.co.uk or use our contact form. We reply within one month.

2. What we collect

DataFromDetails
AccountYouEmail address, display name, date of birth (to check you're 16 or over, and 18 or over before selling; never shown to anyone), password (stored only as a one-way bcrypt hash), the date you accepted these terms.
Collection and wanted listYouSets you own or want, their condition, optionally what you paid, a private note, your own photos, and whether each set is public or private. For wanted sets, the lowest grade and highest price you'd accept.
AlertsYou and automaticallyWhich alerts you've switched on (new listings, price drops, launches, retirements), and a record of each alert we've sent you so you never get the same one twice.
Profile and communityYouYour bio, posts, comments, photos, likes, who you follow and block, and the groups you join or start. Posts, comments, likes, follows, public sets and your profile are visible to other people.
Reports and moderationYou, other members and automatic screeningReports you make or that are made about your content, the reasons, and moderators' decisions.
NewsletterYouYour email address, when and where you signed up, when you confirmed, and if you unsubscribe.
Assistant chatsYouQuestions you ask the on-site assistant. The conversation is kept only in your browser tab; we record that a question was asked, with your account or IP address, to apply fair-use limits.
ListingsYou (sellers)Set, grade, price, description, missing parts, photos, the grading checklist you confirmed, and, if you offer collection, your postcode district (like SW11; never your full postcode or address). Your display name is shown publicly with your listings. Pay-link listings are shown only to people you send the link to.
Orders and offersYou and StripeWhat you bought or sold, prices, fees, delivery name and address (or that it was collected in person, and when), tracking number, order history, issues raised and reviews.
Offers on collection setsYou and other membersOffers you make on, or receive for, sets in a public collection that aren't for sale: the amount, an optional note (checked for safety), and the outcome. Your setting for whether you accept these offers.
Messages about an orderYou and the other partyMessages between buyer and seller on an order page, for example to arrange collection. They are checked automatically for safety (swearing, scams, taking payment off the site) and can be read by our team if there's a dispute or a report.
Seller detailsYou (sellers)Full legal name, National Insurance number or UTR, address and postcode. UK law requires us to collect these. The NI number or UTR is encrypted in our database.
PaymentsStripePayment status and Stripe reference numbers. We never see or store your card details; Stripe does.
Security logsAutomaticallySign-ins, failed sign-ins and account actions, with the time and your IP address.
Messages to usYouYour name, email address and what you write when you use the contact form or email us.
Photos you identifyYouPhotos taken with “Snap a set”. Used once to identify the set and not stored by us (see section 10).

We don't collect special category data, and we don't use advertising or analytics trackers.

3. Why we use it and our legal basis

PurposeLegal basis (UK GDPR Art. 6)
Running your account, listings, collection valuation, offers and orders; sending emails about themContract (6(1)(b))
Taking payments, holding them and paying sellers; handling issues and refundsContract (6(1)(b))
Reporting sellers to HMRC under the digital platform reporting rules; keeping accounting recordsLegal obligation (6(1)(c))
Preventing fraud, account takeover and abuse; security logging and rate limitsLegitimate interests (6(1)(f)): keeping the marketplace and your account safe
Identifying a set from a photo when you ask us toContract (6(1)(b)): a feature you choose to use
Community features: profiles, posts, comments, likes, follows and groupsContract (6(1)(b))
Checking your age at sign-up and before you sellLegal obligation (6(1)(c)) and contract (6(1)(b))
Screening posts, comments, bios, groups, listings and photos (including automatically, with AI), deleting content that breaks the rules, handling reports and moderating contentLegal obligation (6(1)(c)) under the Online Safety Act 2023, and legitimate interests (6(1)(f)) in keeping the community safe
Sending the monthly newsletterConsent (6(1)(a)), which you can withdraw at any time with the unsubscribe link
Answering your questions in the on-site assistantContract (6(1)(b)): a feature you choose to use
Running the business: anonymised statistics on sales, listings and site useLegitimate interests (6(1)(f))
Answering messages you send usLegitimate interests (6(1)(f)): replying to you
Calculating price guides from completed salesLegitimate interests (6(1)(f)): uses anonymised sale prices only

We only send the newsletter if you ask for it and confirm by email. Automatic screening deletes content that clearly breaks the community rules (for example swearing, sexual content or sharing contact details), tells you why, and logs it for our team; three automatic removals in 30 days suspends community access until a person reviews it. This only affects what you can post in the community, not your account, purchases or sales, and you can ask a person to review any decision through the contact form.

4. Who we share it with

We don't sell your data. We share it only with these service providers, who process it for us under written data processing agreements, and with the other party to your order.

WhoWhat forWhere
Vercel Inc.Hosting the website and storing listing photosEU/US
Neon Inc.Our databaseLondon, UK (AWS eu-west-2)
StripePayments, seller identity checks and payouts. Stripe is also a controller for the identity and payment data it collects.UK/EU/US
ResendSending emails about your account and orders, and the newsletterEU/US
Anthropic PBCAI features: identifying sets from photos, answering assistant questions, screening community posts, and drafting the newsletter from public site dataUS
The other party to an orderSellers receive the buyer's delivery name and address. Both see each other's display name.UK
HMRCSeller details and sales totals, where the platform reporting rules require itUK

Set photos in the catalogue are loaded from Rebrickable's image servers, so your browser's IP address is visible to them when you view a set. No other personal data is shared with Rebrickable.

5. International transfers

Some of our providers are based in the United States. Where your data leaves the UK, it's protected by the UK Extension to the EU-US Data Privacy Framework where the provider is certified, or by the UK International Data Transfer Addendum to the EU Standard Contractual Clauses. Email hello@settrader.co.uk for a copy of the safeguards.

6. How long we keep it

DataKept forWhy
Account, collection, wanted listUntil you delete your accountTo provide the service
Delivery name and address on an order90 days after the order completes (180 days if refunded or cancelled)Disputes and chargebacks
Order and payment records6 years after the orderHMRC and the Limitation Act 1980. After that, personal details are removed.
Seller tax detailsWhile you sell, then 6 years after your last reportable sale or account deletionHMRC digital platform reporting rules
Offers that didn't lead to an order12 monthsCustomer service
Photos of listings withdrawn without selling90 daysIn case you relist
Failed sign-in records90 daysSecurity
Other security logs24 monthsInvestigating incidents
Your profile, posts, comments, likes, follows and groupsUntil you delete them or your accountTo provide the community
Content removed by a moderator6 monthsAppeals
Reports and moderation decisions12 months after they're closedAppeals and patterns of abuse
Moderation log (including a short excerpt of removed text)12 monthsAppeals, safety and legal duties
Notifications90 days once read, otherwise 12 monthsTo show you activity
Newsletter sign-upUntil you unsubscribe; unconfirmed sign-ups 30 days. After you unsubscribe we keep your address only so we never email you again, unless you ask us to delete itConsent records (PECR)
Records of AI feature use13 monthsFair-use limits and costs
Messages between buyer and seller2 years after the orderDisputes and chargebacks
Offers on collection sets12 months after they closeCustomer service
Record of alerts sent to you13 monthsSo you don't get the same alert twice
Messages to us2 years after the conversation endsAnswering you and following up
Photos used for Snap a setNot stored by usProcessed once, then discarded

Deletion runs automatically every night.

7. Cookies

We use one cookie, and it's strictly necessary, so we don't need to ask for consent and there's no cookie banner.

NamePurposeLasts
st_sessionKeeps you signed in. Secure, HTTP-only, not readable by scripts.30 days, or until you log out

The on-site assistant keeps your current conversation in your browser's session storage so it survives page changes; it's cleared when you close the tab and is never sent to us except as your next question. No analytics, advertising or social media cookies. When you pay, you're taken to Stripe's checkout page, which sets its own cookies for fraud prevention under Stripe's privacy policy. Our fonts are served from our own domain, so no data goes to Google when you visit.

8. Your rights

For anything you can't do yourself, email hello@settrader.co.uk. We'll respond within one month and won't charge you.

9. Security

All traffic is encrypted (HTTPS with HSTS). Passwords are hashed and never stored in readable form. Seller tax references are encrypted in the database. Sign-in attempts are rate-limited, and admin actions are logged. Card details never reach our servers.

If we have a data breach that risks your rights, we'll tell the ICO within 72 hours and tell you without undue delay.

Found a security issue? Email hello@settrader.co.uk or use the contact form. Our security.txt has the details. Please don't access other people's data while testing.

10. AI features

We use Anthropic's Claude models for four things. Under Anthropic's commercial terms, what we send isn't used to train its models; Anthropic may keep it for a short period for safety and abuse monitoring.

Photos you upload are re-encoded on your device before upload, which removes location and camera data.

11. Children, changes and complaints

You must be 16 or over to create an account, and 18 or over to sell. For members aged 16 and 17 we follow the ICO's Age Appropriate Design Code: their collections start private, they're never suggested to other members to follow, their profiles aren't shown to search engines, and we don't profile them for marketing. We don't knowingly collect data from anyone under 16; if we find an account belongs to someone under 16 we delete it.

If we change this notice materially, we'll tell you by email or on the site before the change takes effect.

If you're unhappy with how we've handled your data, please tell us first. You can also complain to the Information Commissioner's Office: ico.org.uk/make-a-complaint, 0303 123 1113.

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