# Tandem Bank

> Source: https://docs.barcoder.ai/docs/wallets/tandem-bank
> research date 2026-06-01 · extracted at 2026-10-03
> Publisher: Barcoder — encyclopedia of QR, barcode and payment-code standards

Specifications:
- [Tandem Bank — official](https://www.tandem.co.uk/)

## Overview

**Tandem Bank** is a **UK digital bank** operated by **Tandem Bank Limited**, founded **2015** and now positioned as **"the UK's greener digital bank"** <sup>[1][1], [2][2]</sup>. Tandem offers savings accounts, green home-improvement loans, motor finance and a credit-card business, with a strategy centered on financing the transition to lower-carbon living. It holds a full UK banking license (FCA + PRA).

## History

**2015 — Tandem founded** <sup>[2][2]</sup>: One of the earliest wave of UK challenger banks, co-founded by **Ricky Knox** and others.

**2018 — Banking license via Harrods Bank acquisition** <sup>[2][2]</sup>: Tandem acquired Harrods Bank, gaining a full UK banking license.

**2021-2022 — Pivot to green banking + acquisitions** <sup>[2][2]</sup>: Tandem rebranded around sustainability, acquiring **Allium Lending Group** (home-improvement / green lending) and the **Oplo** consumer-lending group to build out its green-finance balance sheet.

## Ownership & operator

**Operating entity**: **Tandem Bank Limited** (UK).

**Co-founder**: **Ricky Knox** (early CEO) <sup>[2][2]</sup>.

**Major backers**: Pollen Street Capital and other institutional investors <sup>[2][2]</sup>.

**Regulators**: **FCA** + **PRA** (UK); deposits FSCS-protected.

## Technical integration

| Layer | Description |
|---|---|
| **Channels** | Tandem mobile app (iOS + Android) + Tandem card |
| **Identifiers** | Email + phone + sort code + account number |
| **UK rails** | Faster Payments + BACS |
| **Card network** | Mastercard (credit card) |
| **Wallets** | Apple Pay + Google Pay via EMV tokenization |
| **Products** | Savings, green home-improvement loans, motor finance, credit card |

## Implementations & partners

**Operator**: **Tandem Bank Limited** (FCA + PRA-regulated UK bank).

**Acquisitions**: Harrods Bank (license), Allium Lending Group, Oplo <sup>[2][2]</sup>.

**Competitors**: [Monzo](https://docs.barcoder.ai/docs/wallets/monzo), [Starling Bank](https://docs.barcoder.ai/docs/wallets/starling), [Zopa](https://docs.barcoder.ai/docs/wallets/zopa), [Atom Bank](https://docs.barcoder.ai/docs/wallets/atom-bank), other UK challengers; green-finance peers.

## Status

**Active** <sup>[1][1], [2][2]</sup>:
- **Tandem Bank Limited** — full UK banking license (acquired via Harrods Bank, 2018).
- Repositioned as a green / sustainable digital bank focused on home-improvement and green lending.
- Customer counts and financials not consistently disclosed in verifiable public form (~).

## Sources

[1]: https://www.tandem.co.uk/ "Tandem Bank — official"
[2]: https://en.wikipedia.org/wiki/Tandem_Bank "Tandem Bank — Wikipedia"
[3]: https://www.altfi.com/ "Tandem Bank coverage — AltFi"

- [1] [Tandem Bank — official][1]
- [2] [Tandem Bank — Wikipedia][2]
- [3] [Tandem Bank coverage — AltFi][3]

## Source

Biography extracted from [tandem-bank.md](https://docs.barcoder.ai/source/wallets/tandem-bank). See `matrix.md` for standards-support matrix if present.