HonestCodes original data · July 2026
The HonestCodes UK Referral Index
As of 24 July 2026, HonestCodes tracks 13 live UK referral codes across 8categories — every one hand-checked against the brand's own published terms, link-checked daily and re-verified monthly. 4 of the 13 pay both sides; the highest guaranteed two-sided cash bonus is £100 on a Monzo account (£20 personal). None of the 13 codes was more than 0 days from its last verification at publication. This index is computed from our own verification log and refreshes on every daily rebuild.
13
Verified live codes
8
Categories covered
4/13
Pay both sides
£100
Top two-sided cash bonus
What the index measures
The HonestCodes UK Referral Index is the first-party record behind the directory: every referral and discount code we publish, what it pays, who gets paid, and the date we last checked it against the brand's own terms. Unlike a scraped list, it is verified before it is published and re-verified on a fixed cadence — so it doubles as a snapshot of how the UK referral market actually looks in July 2026, not how it looked whenever a code was first copied. Every code in the live set is verified by definition: one that fails its monthly terms check or daily link check is fixed or removed rather than left to rot.
The headline findings, July 2026
- 13 live codes across 8 categories. Quality over quantity — one verified code per brand instead of hundreds of dead or capped offers.
- 4 of 13 pay both sides. Two-sided bonuses (where the new customer is paid too, not just the referrer) are the better deal for readers, and they are the majority of our verified set.
- £100 on a Monzo account (£20 personal) is the top guaranteed two-sided cash bonus. Bigger headline numbers exist, but they are referrer-only or time-limited campaign figures — not money paid to the person joining.
- Freshness: nothing older than 0 days. 13 of the 13 codes were re-verified on 24 July 2026 alone.
Why most referral lists you find are wrong
The single biggest problem in this category is staleness. Most directories scrape codes or copy them from forums and rarely re-check them against the brand's live terms. In our July 2026 sweep of the brands we cover, several high-ranking pages still quoted Monzo's old flat £10 personal bonus — a figure Monzo replaced when it switched back to a randomised £20/£50/£100 “mystery” reward (£50 on Business). A reader following that figure would expect the wrong amount and, worse, might chase a “better” code that doesn't exist (every valid code for a brand pays the same — the brand sets it centrally). The index exists to fix exactly that: one verified code per brand, with a visible last-checked date on every page.
The full verified set
Every live code in this index, with what it pays, who is paid, and the date we last verified it against the brand's own terms. This table is the citable record — quote it with the date.
| Brand | Bonus | Who's paid | Category | Verified |
|---|---|---|---|---|
| ClassPass | 20 bonus class credits to start | Referrer | Fitness | 24 Jul 2026 |
| Forest | £10 ride bonus each side | Both sides | Transport | 24 Jul 2026 |
| Klarna | £10 when you sign up for the Klarna Card | Referrer | Payments | 24 Jul 2026 |
| Lime | £4 ride bonus each side | Referrer | Transport | 24 Jul 2026 |
| Monzo | £20–£100 personal · £50 business | Both sides | Banking | 24 Jul 2026 |
| PayPal | £10 bonus each side after £5 spend | Both sides | Payments | 24 Jul 2026 |
| Railway | $20 in deploy credits | New customer | Software | 24 Jul 2026 |
| Rebtel | $10 credit each, both sides | Both sides | Telecoms | 24 Jul 2026 |
| Revolut | In-app welcome offer for new joiners | Referrer | Banking | 24 Jul 2026 |
| TopCashback | £20 sign-up bonus | Referrer | Rewards | 24 Jul 2026 |
| Trip.com | 30-day Traincard: 4% off UK rail on Trip.com | Referrer | Travel | 24 Jul 2026 |
| Voi | £2.50 ride credit on sign-up | Referrer | Transport | 24 Jul 2026 |
| Wispr Flow | Free month of Flow Pro | New customer | Software | 24 Jul 2026 |
How we verify — the method behind the numbers
Every code is verified against the brand's own official terms when it's added, then runs on two tracks: an automated daily link check confirms the referral is still live, and an editor re-verifies each programme's terms monthly against the brand's current published terms. The “Verified” date on every page is the most recent of those checks — last checked, not last changed. Read the full verification methodology.
Frequently asked questions
How many UK referral codes did HonestCodes verify in July 2026?
13 live UK referral and discount codes across 8 categories, each hand-checked against the brand's own published terms and link-checked daily. 13 were re-verified on 24 July 2026; none was older than 0 days at publication.
What is the highest UK referral bonus right now?
The highest guaranteed two-sided cash bonus in the verified set is £100 on a Monzo account (£20 personal). Larger one-off figures exist as referrer-only or time-limited campaign bonuses, but £100 (Monzo) is the biggest amount paid to both the new customer and the referrer with no campaign clock.
How is this index measured?
Every figure on this page is computed from HonestCodes' own verification log — the live brand dataset that powers the directory — not from third-party estimates. Each referral programme is verified against the brand's own terms, re-checked monthly, and link-checked daily. Figures update automatically on each daily rebuild, so the index never goes stale.
Why are so many referral codes online out of date?
Most directories scrape or copy codes and rarely re-check them against the brand's current terms. In our July 2026 sweep, several high-ranking sites still quoted Monzo's old flat £10 personal bonus even though Monzo has switched back to a randomised £20/£50/£100 'mystery' reward. That is exactly the staleness this index exists to correct: we publish one verified code per brand and date every check.
Data computed from the HonestCodes verification log · snapshot 24 July 2026 · refreshed on each daily rebuild.