What Is Prop Trading? The Two Meanings a UK Reader Meets
Prop trading means two things in the UK: a bank trading its own capital, which ring-fencing restricts, and a paid evaluation on simulated funds.
Prop trading, short for proprietary trading, is a firm trading financial instruments with its own capital and keeping the profit or loss. In the UK the phrase also names a retail product: a “prop firm” sells a paid evaluation, which may run on simulated funds. The first is restricted inside ring-fenced banks; the second is a different business.
That is the answer to “what is prop trading”, and it has two halves because a UK reader meets the phrase in two places. One is a Bank of England document about banks. The other is a prop firm’s homepage offering an evaluation. Most of the ranking pages this desk could open on 19 October 2026 describe one meaning or the other, rarely both, and none of the bodies read set the two against a UK regulator’s own document.
This is an evergreen explainer. The definitions do not expire. The figures below are dated to the documents that carry them, and the one live policy question, ring-fencing reform, is described as what it is: proposed, not law.
The two meanings of prop trading, side by side
Every cell comes from the document named in the first row, read by this desk on 19 October 2026.
| Bank proprietary trading | Retail “prop firm” evaluation | |
|---|---|---|
| Document read | PRA, Proprietary Trading Review, September 2020 | Alpha Capital Group’s UK homepage, FAQ and footer |
| Whose capital | The firm’s own capital, liquidity or both; profits and losses accrue to the firm, not its clients | The customer’s fee; the page says “You do not deposit money to trade your own funds with us” |
| Real market orders? | Yes: trading in financial instruments or commodities as principal | The page says evaluation accounts use simulated funds, and the Qualified Analyst stage stays in “a simulated market environment” |
| What the customer pays | Nothing; there is no customer in the trade | An evaluation fee; the page says “You pay for an evaluation” |
| What the individual can earn | A salary, as an employee of the firm | Performance fees on simulated profits: 80% standard, or 90% with a paid add-on |
| UK framework the document names | Ring-fencing under the Financial Services (Banking Reform) Act 2013, in force since 1 January 2019 | The firm describes itself as “a proprietary trading company, not a broker”; its footer says the term trading refers “exclusively to virtual trading” |
The salary row is the one cell the review does not state in those words; it is the plain consequence of the definition, since the money traded is the firm’s and the profit is the firm’s. Everything else in the table is quoted or paraphrased from the page named at the top of its column.
What is prop trading at a bank? The PRA’s definition
The Prudential Regulation Authority, part of the Bank of England, published its Proprietary Trading Review in September 2020. Its cover says it was laid before Parliament pursuant to Section 9 of the Financial Services (Banking Reform) Act 2013, and it reviews proprietary trading in PRA-authorised deposit takers and investment firms.
Its definition is short. Proprietary trading is trading in financial instruments or commodities as principal. It requires the use of a firm’s own capital, or liquidity, or both, and the profits or losses accrue to the firm rather than to its clients.
The review then separates out what most people picture. “Classic” proprietary trading, it says, is usually thought of as short-term own-account trading with the intent of profiting from market movements unconnected with client activity. The wider statutory definition also catches some kinds of client facilitation, liquidity management and hedging, and the review considers all of them.
How ring-fencing restricts it
The UK ring-fencing regime commenced on 1 January 2019. The review describes it as structurally separating core retail banking from investment banking, and as prohibiting the retail and small-business bank, the “ring-fenced bank”, from a number of activities, including classic proprietary trading.
The restriction is on the ring-fenced bank, not on the whole group. That is the difference the review draws with the United States, where the Volcker Rule bans certain activities for US entities rather than just, as in the UK, for ring-fenced banks. Per the review, the Volcker Rule went into effect on 1 April 2014, with full compliance required by 21 July 2015. The review adds that the Volcker Rule focuses on short-term own-account activity in the trading book, where short-term typically means less than 60 days, so it does not reach most longer-term investments.
What the 2020 review found
These are the review’s findings as of 2020, not present measurements. It found the overall trading VaR (value at risk) of the large ring-fenced banks was, on average, less than 0.6% of the total trading VaR for the groups they belong to. Based on its review, it found no evidence that classic proprietary trading was being conducted in ring-fenced banks.
It gave two reasons for what it found: post-2008 capital requirements made the activity expensive, and ring-fencing separated it from retail banking. Its conclusion was that the PRA did not need new powers to address the risks of proprietary trading.
Is ring-fencing changing? What is proposed and what is law
On 18 May 2026 HM Treasury announced ring-fencing reforms. The announcement proposes a new Growth Allowance, which it says could let banks provide up to £80 billion in additional support to businesses, and would move more of the detail out of legislation and into PRA rules. It says ring-fenced banks will continue to operate independently from investment banking activities, and that the reforms will be delivered through the forthcoming Enhancing Financial Services Bill and subsequent legislation.
The Treasury’s consultation on ring-fencing reform, dated July 2026, invited responses by 11:59pm on Tuesday 8 September 2026. It refers back to the Smarter Ring-Fencing Reforms of February 2025.
As of this writing, then, the reforms are announced and consulted on. On the documents read here they are not yet law, and this desk has read no consultation response.
What is a prop firm? The retail meaning
The second meaning is the retail one. A retail “prop firm” sells an evaluation: a test account with a profit target and loss limits, on which the customer tries to qualify for a share of results.
Alpha Capital Group, which describes itself on its homepage as a UK prop firm, sets out its own model in plain terms. Its FAQ says: “We run simulated evaluations.” It says the company is a proprietary trading company and not a broker, that the customer pays for an evaluation, and that the customer does not deposit money to trade their own funds with it.
To its own question, “Am I trading with real funds?”, the page answers “No. Evaluation accounts use simulated funds.” After passing, the page says, the customer stays in a simulated market environment as a Qualified Analyst, where eligible profits can generate performance fees. It adds that simulated results do not reflect real trading outcomes. The page names ACG Markets, part of the same group, as the broker that powers its simulated environment.
The headline offer is “up to 90% of your simulated profits”; the pricing section says 80% is standard and 90% is a paid add-on. The page’s opening line calls the company “one of the best prop trading firms in the UK”, which is the firm’s own marketing copy. The footer gives ALPHA CAPITAL GROUP LIMITED, company number 13719951, with a registered office in Harpenden. This desk did not check that number against Companies House, and a company number is not an authorisation of any kind.
How the funded stage and its payouts work across several firms is covered in this site’s explainer on what a funded trader is, and the stage-by-stage route in how to become a funded trader. This site’s Alpha Capital Group review reads the firm’s rules in more detail.
Why the two meanings must be kept apart
The PRA review is about PRA-authorised banks and investment firms. Its stated purpose for ring-fencing is to guard the ring-fenced bank from the negative impact of many forms of proprietary trading elsewhere in its group. It says nothing about retail evaluation companies, and ring-fencing does not govern them. A retail prop firm’s page that borrows the language of “proprietary trading” is not, by doing so, describing anything the 2020 review measured.
The direction of the money also runs the other way. At a bank, the firm’s capital is at risk and any profit is the firm’s. At the retail evaluation described on Alpha Capital Group’s page, the money the customer certainly spends is the fee, and the trading itself, per the firm’s own footer, is virtual.
Frequently asked questions
What is prop trading and how does it work?
In the regulator’s sense, a firm trades financial instruments as principal with its own capital, and keeps the profit or loss. In the retail sense, a company sells an evaluation: the customer pays a fee, trades an account under the company’s rules, and may earn a share of results. Alpha Capital Group’s homepage says that account is simulated.
Is prop trading legal in the UK?
For banks, the PRA’s 2020 review describes the answer: ring-fenced banks are prohibited from classic proprietary trading, while the rest of a banking group is not banned from it. For retail evaluation firms, the documents read here settle nothing either way. None of them is evidence that any such firm is authorised, and the review does not cover them.
Do prop traders use real money?
At a bank, yes: the PRA defines prop trading as using the firm’s own capital, liquidity or both. At Alpha Capital Group, the firm’s homepage answers its own question ‘Am I trading with real funds?’ with ‘No’, and says the Qualified Analyst stage stays simulated. The evaluation fee the customer pays is real money.
How do prop firms make money?
A bank’s prop desk makes or loses money on its own positions, since the PRA says profits and losses accrue to the firm. A retail evaluation company sells evaluations: Alpha Capital Group’s homepage says ‘You pay for an evaluation.’ The pages read here do not break down any firm’s revenue, so how much comes from fees is not something this desk can state.
What this desk read, and what it did not
Read at 200 on 19 October 2026: the PRA’s Proprietary Trading Review (September 2020); HM Treasury’s 18 May 2026 announcement; the Treasury’s July 2026 ring-fencing consultation, in part; and Alpha Capital Group’s UK homepage, including its FAQ and footer. Not read: the ring-fencing legislation itself, any consultation response, any regulator’s register, or any other firm’s terms.
The risk line
Nothing here says any prop firm, or any company in its group, is regulated, authorised or licensed; for how UK promotion rules reach this industry, see this site’s note on the promotions perimeter. Ring-fencing is a rule about the structure of banks and does not cover evaluation customers. The money a retail customer puts at risk is the fee, and nothing here is advice on whether to pay one.