A structured archive for serious Pokémon TCG collectors — built to last.
A reference library, a documented collection, and tracking tools for serious collecting. Grown from one collector's private archive.
The project started privately.
A tracking archive, built for one collector's use. The tools available at the time were almost entirely built for US collectors — pricing in dollars, grading services without UK routing, market data shaped by American demand. It grew into guides, a public catalogue, and eventually tools others could use. None of it was planned as a business.
Behind the work
Oz Kara
Oz grew up in the UK during the original Pokémon era and returned to collecting years later as an adult. What began as a personal tracking system for his own cards slowly turned into something bigger.
He wanted a better way to document collections, track values over time, and organise cards properly — but most tools felt fragmented, short-lived, or built around hype rather than long-term collecting.
So he built his own.
The guides came from research he was already doing for himself. The public collection grew from records he was already keeping. Cardfolio followed from the same process.
Oz is based in London with his wife and two children. The project has been built gradually over several years, with the belief that useful tools and meaningful collections should last.
How it grew
The gap became clear.
Collectors had grading reports, marketplace listings, spreadsheets, and registry tools — but no single place to understand the full picture of a Pokémon TCG portfolio. For UK collectors specifically, most of these resources were built around US dollar pricing and American grading logistics. Tracking, valuing, and documenting a collection still felt fragmented, and the UK dimension was largely absent.
The foundation was mapped.
Research confirmed the need for a more connected approach. The idea developed into two core parts: a public collection catalogue for structured data, and editorial guides for context, education, and market understanding.
TCG Mart London launched.
The public Collection went live as a documented Pokémon TCG catalogue. Every card was treated as part of a wider portfolio: recorded, valued, and presented openly from day one.
The research library expanded.
Guides launched as the editorial layer of the project, covering grading, set history, market behaviour, and collection management. The goal was simple: make specialist collecting knowledge easier to access.
The ecosystem took shape.
The Collection and Guides began operating as one connected whole. TCG Mart London became more than a catalogue — the centre of a broader collecting project.
Cardfolio launches in beta.
Cardfolio goes live: a collection-tracking app built on the same principles that shaped the public Collection. Graded, valued, documented — giving collectors a clearer way to manage their own cards, free during the open beta.
One collecting ecosystem. Three connected parts.
TCG Mart London is the parent identity behind a public Collection, an editorial Guides library, and Cardfolio — the app that brings the same structure to individual collectors.
Collection.
A visible catalogue of Pokémon TCG cards, built around documented records, valuation history, grading details, and long-term collection tracking.
Guides.
Editorial guides covering grading, sets, market behaviour, and collection management — written to help collectors understand what they own, not chase hype.
Cardfolio.
A collection-tracking app built on the same model as the public Collection, giving collectors a structured way to document, value, and manage their own cards.
Different outputs. Same principles: structured data, clear documentation, and collector-first design.
Built for clarity, not noise.
TCG Mart London exists to make collecting easier to understand: what a card is, what it is worth, where it fits, and why it matters.
Document everything.
Cards, values, grades, sets, and guides are treated as part of one connected collecting record.
Value with context.
Prices are documented, not predicted. The focus is on visible market behaviour, not speculation.
Avoid hype.
No trend-chasing, no exaggerated claims, no artificial urgency. Built entirely to reduce noise.
Stay independent.
No ad revenue, affiliate influence, or paid grading links. Funded by Cardfolio, not by steering collectors elsewhere.
Built over time. Maintained with intent.
Every figure reflects work carried out consistently: cards catalogued, guides published, and a platform built to the same standard throughout.
The system is open.
Guides and Collection are available without an account. Cardfolio is live in open beta — free to use. Start wherever makes sense.
We read everything.
Direct contact only. No advertising or sponsorship enquiries.
Questions, press, or working together?
We read every message and reply within a few days. This covers guides, cards, the collection, editorial collaborations, and Cardfolio partnership enquiries.