UBKB Fighter Pay: How Much Do Ultimate Bare Knuckle Boxing Fighters Make?
UBKB does not publish a fighter pay scale. Ultimate Bare Knuckle Boxing is a professional, WSBKB-sanctioned promotion based in Warrington, UK, and unlike the pure-underground operations it shares a scene with, it runs as a sanctioned event. That sanctioning implies contracted purses rather than a winner-only prize, but UBKB has not released figures, so every reported amount is unconfirmed.
UBKB, short for Ultimate Bare Knuckle Boxing, is run out of Warrington, UK, by Shaun and Amanda Smith alongside Stu Armstrong. The detail that sets it apart from most of the underground scene is its sanctioning: UBKB events run under the World Series of Bare Knuckle Boxing (WSBKB), which places it in the professional, regulated tier rather than the grey-zone warehouse circuit. Sanctioning changes the expectation around pay, because a regulated professional promotion typically operates on contracted purses. It does not, however, mean UBKB publishes those purses. It does not.
Pay Structure
As a WSBKB-sanctioned professional promotion, UBKB almost certainly operates on a purse-based model: fighters contracted to a card for an agreed fee, in the pattern of regulated combat sports, rather than a winner-takes-all prize on the night. This is the structural difference between a sanctioned promotion such as UBKB and a pure underground operation such as King of the Streets, where only the winner is paid.
That said, "sanctioned" does not equal "transparent." UBKB has not published a purse schedule, a minimum fighter pay figure, or a win-bonus structure. The professional framing tells you the shape of the model with reasonable confidence; it does not tell you the numbers. Both points need stating, because conflating them would overstate what is actually documented.
What Fighters Earn
Here the answer is hedged on amounts, because UBKB has published no figures. Several points can be stated plainly rather than guessed:
- No official purse figure exists on the record. Any specific pound amount attached to a UBKB fighter online is unconfirmed and not sourced to the promotion.
- Sanctioned status implies contracted, not winner-only, pay. A WSBKB-sanctioned card typically pays fighters an agreed purse for competing, which would put a floor under the loser, unlike the underground prize model. UBKB has not confirmed the figures involved.
- Tier likely affects pay. A headline professional bare-knuckle bout would reasonably command more than a debut, but the spread is not documented.
The cleanest summary: UBKB fighters compete on sanctioned professional cards that almost certainly pay contracted purses, in amounts the promotion does not publish.
How UBKB Pay Compares
Placing UBKB against its peers shows how a sanctioned professional promotion sits apart from the rest of the UK and underground scene.
| Organization | Ruleset | Pay model | Figures published? |
|---|---|---|---|
| UBKB | Pro bare knuckle, WSBKB-sanctioned | Likely contracted purse | No |
| Bad to the Bone | Pro bare knuckle | Purse-based | No |
| King of the Ring | Amateur boxing, gloves | Undisclosed | No |
| BKFC | Pro bare knuckle, commission-regulated | Base purse + win bonus; prelims ~$2.5k–$5k, stars $1M+ | Partially |
Two things stand out. First, UBKB sits in the same professional, regulated tier as Bad to the Bone and the US promotion BKFC, well above the amateur-rules and grey-zone operations. Second, of these, only BKFC has any figures in public, and those come through US athletic commissions rather than voluntary disclosure; in the regulated US example, prelim fighters reportedly earn in the $2,500 to $5,000 range while top stars have commanded $1M-plus. UBKB has no equivalent commission disclosure on record in the UK, so its purses remain unconfirmed.
Sponsorship and Other Income
For a UBKB fighter, the contracted purse is likely only part of the income picture. Several paths sit alongside it:
- Win bonuses and bout incentives. Sanctioned promotions commonly layer win bonuses or performance incentives on top of a base purse, though UBKB has not published its structure.
- Personal audience. A recognizable UBKB fighter can build a social following and monetize it directly, independent of the promotion.
- Sponsorship. Gyms, apparel brands, and combat-sport businesses sometimes back visible professional fighters, though UBKB publishes no sponsorship program.
None of these are documented as official UBKB revenue streams. They are the practical ways a professional bare-knuckle fighter supplements a purse the promotion does not publish.
Why the Figures Stay Unpublished
The opacity here is different from the pure underground. UBKB's WSBKB sanctioning means its events run within a recognized bare-knuckle framework, but UK bare-knuckle does not carry the same routine commission pay disclosure that surfaces US figures. Without that mandated paper trail, the promotion's purses stay private by default, the way most privately run combat-sport events keep fighter contracts confidential. For an encyclopedia of the scene, the right move is to report the model with the confidence the sanctioning supports, and to flag the actual amounts as undisclosed rather than invent them.
For how UBKB's sanctioned approach contrasts with the rest of the scene, compare it to the gloved, amateur-rules King of the Ring and the winner-takes-prize King of the Streets model.
What We Can and Cannot Say About UBKB Pay
For clarity, here is the line between documented and undocumented:
Documented:
- UBKB is based in Warrington, UK, and run by Shaun and Amanda Smith with Stu Armstrong.
- Events are professional bare-knuckle bouts sanctioned by WSBKB.
- The sanctioned professional model implies contracted purses rather than winner-only prizes.
Not documented (any figure is unconfirmed):
- The size of UBKB fighter purses.
- The minimum or base pay for a debut professional.
- Whether win bonuses exist, and how large.
- How pay scales between undercard and headline bouts.
Holding that line is the point of this page. In a niche this opaque, a number presented with false confidence is worse than an honest "undisclosed."
Frequently Asked Questions
How much do UBKB fighters make?
The exact amount is undisclosed. As a WSBKB-sanctioned professional promotion, UBKB almost certainly pays contracted purses rather than winner-only prizes, but it has not published a pay scale, so any specific figure online is unconfirmed.
Is UBKB a sanctioned promotion?
Yes. Ultimate Bare Knuckle Boxing runs under World Series of Bare Knuckle Boxing (WSBKB) sanctioning, which places it in the professional, regulated tier rather than the pure underground.
Does UBKB pay losing fighters?
Its sanctioned professional model implies a contracted purse that would pay fighters for competing regardless of result, unlike the underground winner-only prize. UBKB has not published the figures, so the exact loser pay is unconfirmed.
Who runs UBKB?
UBKB is based in Warrington, UK, and run by Shaun and Amanda Smith alongside Stu Armstrong.
Why doesn't UBKB publish fighter pay?
UK bare-knuckle does not carry the routine commission pay disclosure seen in the US, so UBKB's contracted purses stay private by default, like most privately run combat-sport events.