I Timed 300 Market Orders Across 6 UK CFD Brokers. Capital.com Won at 24ms.
- expertise:
- CFD Trading, Forex, Derivatives, Risk Management
- credentials:
- Chartered ACII (2018) · Trading since 2012
- tested:
- 40+ forex & CFD platforms with live accounts
- expertise:
- Broker Comparison, ISA Strategy, Portfolio Management
- credentials:
- Active investor since 2013 · 11+ years experience
- tested:
- 40+ brokers with funded accounts
How We Test
Real accounts. Real money. Real trades. No demo accounts or press releases.
What we measure:
- Spreads vs advertised rates
- Execution speed and slippage
- Hidden fees (overnight, withdrawal, conversion)
- Actual withdrawal times
Scoring:
Fees (25%) · Platform (20%) · Assets (15%) · Mobile (15%) · Tools (10%) · Support (10%) · Regulation (5%)
Regulatory checks:
FCA Register verification · FSCS protection
Testing team:
Adam Woodhead (investing since 2013), Thomas Drury (Chartered ACII, 2018), Dom Farnell (investing since 2013) — 50+ platforms with funded accounts
Quarterly reviews · Corrections: info@theinvestorscentre.co.uk
Disclaimer
Not financial advice. Educational content only. We're not FCA authorised. Consult a qualified advisor before investing.
Capital at risk. Investments can fall. Past performance doesn't guarantee future results.
CFD warning. 67-84% of retail accounts lose money trading CFDs. High risk due to leverage.
Contact: info@theinvestorscentre.co.uk
Quick Answer: Which UK CFD Broker Has the Lowest Execution Latency?
Capital.com filled my market orders the fastest at a median 24ms. Pepperstone (Razor) came second at 47ms. The slowest broker tested, Spreadex, filled at 110ms. The 86ms gap between fastest and slowest cost an average of £4.20 in slippage on a £10,000 EUR/USD round-trip during the London session.
Latency rank across all six brokers tested:
- 1. Capital.com, 24ms median, fastest fills overall
- 2. Pepperstone (Razor), 47ms median, fastest of the ECN-style accounts
- 3. Saxo, 70ms median, most consistent distribution
- 4. IG, 85ms median, limit fills 60ms slower than market orders
- 5. CMC Markets, 95ms median, slower around news events
- 6. Spreadex, 110ms median, slowest baseline but stable under news
Introduction
Every CFD broker says their execution is fast. None of them measure it the same way, so I funded six FCA-regulated brokers with £500 each, opened live retail accounts, and timed 50 market orders per broker from a wired Suffolk desk between October 2025 and January 2026. The page below has every number I logged, what I noticed at each platform, and what I deliberately didn't test.
UK CFD Brokers Tested for Latency, Ranked by Speed
Capital.com
- Median Latency
- 24ms
- p95 Latency
- 41ms
- Sample
- 50 orders
- Best For
- Scalping, news trading
61% of Retail CFD Accounts Lose Money
Spreadex
- Median Latency
- 110ms
- p95 Latency
- 195ms
- Sample
- 50 orders
- Best For
- Stable fills under news
65% of retail CFD accounts lose money.
IG
- Median Latency
- 85ms
- p95 Latency
- 144ms
- Sample
- 50 orders
- Best For
- Market orders, not limits
69% of retail CFD accounts lose money.
Pepperstone
- Median Latency
- 47ms
- p95 Latency
- 73ms
- Sample
- 50 orders (Razor)
- Best For
- Lowest total trading cost
73% of retail CFD accounts lose money.
CMC Markets
- Median Latency
- 95ms
- p95 Latency
- 168ms
- Sample
- 50 orders
- Best For
- Calm-market intraday
68% of retail CFD accounts lose money.
Saxo
- Median Latency
- 70ms
- p95 Latency
- 112ms
- Sample
- 50 orders
- Best For
- Steady, no outliers
64% of retail CFD accounts lose money.
CFD Broker Latency Test Results, October 2025 to January 2026
Every figure below is from 50 market orders per broker, traded on EUR/USD, GBP/USD, USD/JPY, the UK 100 and Germany 40, from a wired Suffolk office connection during the London session and the London-NY overlap. The full methodology sits below the table.
| Latency Rank | Broker | Median | p95 | Sample | Note |
|---|---|---|---|---|---|
| #1 | Capital.com | 24ms | 41ms | 50 | Fastest market-order fills overall |
| #2 | Pepperstone (Razor) | 47ms | 73ms | 50 | Razor was 18ms faster than the Standard account |
| #3 | Saxo | 70ms | 112ms | 50 | Most consistent distribution, no outliers above 200ms |
| #4 | IG | 85ms | 144ms | 50 | Limit fills 60ms slower than market orders |
| #5 | CMC Markets | 95ms | 168ms | 50 | Their public 4ms claim is not what I measured |
| #6 | Spreadex | 110ms | 195ms | 50 | Slowest baseline, barely changed under news pressure |
Median = 50th percentile of timestamped fills. p95 = the 95th percentile, i.e. the slowest 5% of fills. All figures cover the full October 2025 to January 2026 testing window.
Two Things Worth Calling Out from the Table
First, CMC Markets publishes a 4ms median execution figure on their site. I measured 95ms. The likely explanation is that CMC's number is the time their server takes to acknowledge an order internally, not the round-trip from a UK trader's click to a confirmed fill. Both numbers can be true. The one that matters to a UK retail trader sitting in front of a screen is mine.
Second, every broker's execution slipped during the BoE and NFP windows. The gap between fastest and slowest widened to roughly 200ms during the BoE rate decision on 6 November 2025.
Where the Milliseconds Go in News Trading
The infographic below breaks down the round-trip from a data release (BoE, NFP, ECB) to a confirmed fill. Every step adds latency: feed delivery, signal recognition, order routing, broker matching, fill confirmation. The slowest broker in the test absorbs four to five times more of those steps than the fastest, which is why the gap widens around news rather than narrows.
How I Measured These Latencies
Test window: 1 October 2025 to 31 January 2026.
Location: my desk in our Suffolk office, on a wired FTTP connection (Virgin Media 1 Gb).
Accounts: live retail accounts at all six brokers. Each funded with £500 by bank transfer. No demo, no simulated environment.
Instruments: EUR/USD, GBP/USD, USD/JPY, the UK 100, and Germany 40.
Sessions: the London session (08:00 to 12:00 GMT) and the London to New York overlap (12:00 to 16:00 GMT).
Sample size: 50 market orders per broker, with extra fills logged around three high-impact news events: the BoE rate decision on 6 November 2025, the ECB decision on 12 December 2025, and US Non-Farm Payrolls on 5 December 2025 and 9 January 2026.
What "execution latency" means here: the time from clicking submit on a market order to the broker confirming the fill in the platform UI or API response. I used the platform's own timestamps where they were exposed to the API and stopwatch-checked them against my client clock to make sure they weren't lagging.
For the wider testing methodology, including how the deposit and withdrawal handling were measured, see our How We Test page.
Capital.com: Fastest Fills, Calm and Busy
- Median
- 24ms
- p95
- 41ms
- Slowest
- 49ms
- Sample
- 50
- News slip
- +22ms
Capital.com (FCA FRN 793714) had the fastest fills in both calm and busy markets. Median 24ms on EUR/USD market orders, with no fill above 50ms across the 50-order sample.
The platform UI also felt responsive. Order ticket open to filled in under one second on most trades.
Pros (latency lens)
- 24ms median, fastest of the six tested
- Tightest spread of fills (49ms slowest, 22ms fastest)
- Order ticket UI does not lag the fill
- News-window slip held to +22ms over baseline
Cons (latency lens)
- Briefly blocked new market orders for ~8 seconds during the ECB print
- No MetaTrader on UK platform, so no MT4/MT5 latency benchmarks possible
What I Noticed at Capital.com
During the ECB print on 12 December, the platform briefly blocked new market orders for about 8 seconds. The fills that did go through were still under 60ms. I would rather a brief pause than partial fills at bad prices, but it is worth knowing if you trade releases.
For the broker-account breakdown beyond latency, see our Capital.com review.
Spreadex: Slowest Baseline, Stable Under News Pressure
- Median
- 110ms
- p95
- 195ms
- Slowest
- 240ms
- Sample
- 50
- News slip
- +5ms
Spreadex (FCA FRN 190941) was the slowest in calm markets at 110ms. But during the BoE decision, when other brokers' p95 jumped sharply, Spreadex's barely moved. 115ms during the news window versus 110ms median in calm markets.
I don't have a confirmed explanation for the news-window steadiness. One possibility is that as a market-maker, Spreadex internalises more order flow, which can decouple execution timing from external-liquidity-provider volatility during news prints. Treat the latency consistency as the observed result, not as proof of a specific architecture.
Pros (latency lens)
- News-window latency held within 5ms of calm-market baseline
- Tightest news-window p95 distribution of the six tested
- No outlier fills above 240ms
Cons (latency lens)
- 110ms calm-market median, slowest of the six
- p95 of 195ms means 1-in-20 fills sit close to a quarter of a second
What I Noticed at Spreadex
For traders who want predictable execution timing rather than the absolute lowest latency, Spreadex was the steadiest of the six tested through the news windows in our sample. The trade-off is the slower calm-market baseline. Spreads themselves are variable on Spreadex, not fixed, so do not assume cost stability under news from latency stability.
For the full Spreadex picture beyond latency, see our Spreadex review.
IG: Solid on Market Orders, Slower Than Expected on Limits
- Median (market)
- 85ms
- Median (limit)
- 144ms
- p95
- 144ms
- Sample
- 50
- News slip
- +45ms
IG (FCA FRN 195355) market orders averaged 85ms. Limit orders averaged 144ms, which I did not expect. I had assumed limits would fill faster than markets, since the broker doesn't have to source liquidity at the moment of the click.
I confirmed it by repeating the limit-order test on a different day. Same result.
Pros (latency lens)
- Market-order fills consistent at 85ms median
- Mid-pack on news-window slip (+45ms versus baseline)
- Platform stayed up across the full test window
Cons (latency lens)
- Limit orders 60ms slower than market orders
- Slowest of the top three brokers tested
What I Noticed at IG
The market vs limit gap is the surprise here. If you trade limit orders heavily, the IG headline market-order figure understates what your typical fill speed will be. For market-order traders, IG is fine. For limit-heavy strategies, treat 144ms as the working number.
For the full IG breakdown beyond latency, see our IG review.
Pepperstone Razor: Fastest of the ECN-Style Accounts
- Median (Razor)
- 47ms
- Median (Standard)
- 65ms
- p95
- 73ms
- Sample
- 50 (each account)
- News slip
- +38ms
The Pepperstone (FCA FRN 684312) Razor account filled at 47ms median on EUR/USD. The Standard account, on the same broker and the same instruments, was slower at 65ms median. I did not expect that gap, since both should route through the same Pepperstone infrastructure.
The Razor account also had the tightest spreads I logged: 0.0 pips on EUR/USD during the London-NY overlap, with a £2.25 commission per side. For traders measuring total cost rather than just spread, Razor was the cheapest on three of the five instruments tested.
Pros (latency lens)
- 47ms median on Razor, second only to Capital.com
- Tightest p95 distribution of the ECN-style accounts (73ms)
- 0.0 pip EUR/USD spread during London-NY overlap
Cons (latency lens)
- Standard account 18ms slower than Razor on identical orders
- News slip larger than Capital.com's (+38ms)
What I Noticed at Pepperstone
The Razor vs Standard latency gap is the most actionable finding for Pepperstone customers. If you are paying for Razor, you are getting the speed. If you are on Standard for the commission-free pricing, expect 18ms slower fills.
For the full Pepperstone breakdown beyond latency, see our Pepperstone review.
CMC Markets: Solid in Calm Markets, Slower Around News
- Median
- 95ms
- p95
- 168ms
- BoE-window
- 280ms
- Sample
- 50
- Public claim
- 4ms
CMC Markets (FCA FRN 173730) UK 100 and Germany 40 fills were 95ms median in calm sessions. During the BoE decision, that jumped to 280ms.
CMC publishes a 4ms median execution figure on their site. I measured 95ms. The likely explanation is that CMC's number is server-side acknowledgment, not the round-trip from a UK retail click to a confirmed fill. Both numbers can be true. Mine is the one a UK retail trader actually feels.
Pros (latency lens)
- Calm-market fills consistent at 95ms median
- Platform stayed up across the full test window
- Depth-of-market visibility helps you anticipate slow fills
Cons (latency lens)
- BoE-window fills jumped to 280ms, the worst news slip of the six tested
- Published 4ms figure does not reflect a UK retail experience
What I Noticed at CMC Markets
If you trade CMC outside news windows, the 95ms figure is fair. If you trade releases on this platform, treat the BoE-window 280ms as your working number for risk planning.
For the full CMC breakdown beyond latency, see our CMC Markets review.
Saxo: Steady, No Outliers
- Median
- 70ms
- p95
- 112ms
- Slowest
- 198ms
- Sample
- 50
- News slip
- +40ms
Saxo (FCA FRN 551422) median was 70ms, with the most consistent distribution of any broker tested. No fill went above 200ms, even during NFP.
The trade-off is Saxo's commission structure: £3 per stock CFD trade and a £100 quarterly inactivity fee after six months of no trading. The latency win has to be weighed against the cost.
Pros (latency lens)
- Most consistent latency distribution of the six tested
- No fill above 200ms across the full sample
- Multi-leg conditional orders filled without rejection
Cons (latency lens)
- 70ms median is mid-pack, behind Capital.com and Pepperstone Razor
- Commission structure may erode the speed advantage on smaller trades
What I Noticed at Saxo
If you are placing complex multi-leg orders and need the broker not to drop legs under pressure, Saxo is the steadiest of the six tested. The latency is mid-pack but the variance is the lowest.
For the full Saxo breakdown beyond latency, see our Saxo review.
What This Means for the Way You Trade
If You Scalp or Trade News
Capital.com and Pepperstone Razor are the only two from this group I would shortlist. Both filled fast and consistently in the test window, with sub-50ms median latency and tight p95 distributions. For the broader picture on platforms suited to this style, see our scalping platform guide, where latency is one of three factors I weight alongside spread tightness and platform stability.
If You Day Trade and 50ms Doesn't Change Your Trade
Weight cost over speed. Pepperstone Razor wins on total cost, with 0.0 pip EUR/USD spreads at £2.25 commission per side during the London-NY overlap. Spreadex was the steadiest on execution timing through news windows in our sample, though spreads on Spreadex are variable and may widen during the same windows, so cost predictability is a separate question from latency predictability.
If You Swing Trade or Hold for More Than a Day
Latency is roughly irrelevant. The difference between a 24ms fill and a 110ms fill is essentially zero in P&L terms over a multi-day hold. Pick on spreads, platform tools, and account features. Our best CFD trading platform UK guide ranks these brokers across all of those axes.
If You're an Elective Professional or Use Co-Located Servers
The numbers above are retail-account, non-colocated. Brokers offering elective professional accounts often expose lower-latency execution paths once you qualify, especially at IG and Pepperstone. See our elective professional CFD accounts guide for what changes when retail leverage and execution caps no longer apply.
What I Didn't Test, and Why It Matters
This was a UK retail latency test from a Suffolk office. The numbers will be different in other conditions, and I want to be clear about what I left out.
- I did not test from a colocated server. Brokers offering colocation will fill significantly faster than my numbers show.
- I did not test from outside the UK. Latency from a US, EU, or Asian connection will be different.
- I did not test mobile apps. Mobile fills are usually slower than desktop and platform-dependent.
- I only tested limit-order fills at IG. The IG result above (limits 60ms slower than markets) might be specific to IG, not a general pattern.
- I did not test events outside the four-month window. FOMC days, geopolitical shocks, and Asian-session prints will produce different numbers.
If you trade from any of these conditions, treat the table above as a relative ranking, not an absolute prediction.
When I'll Re-Run This Test
Quarterly. The next test is scheduled for the first two weeks of August 2026. Updated numbers will be published in this article, and any changes from this round will be flagged in the results table.
If you want the raw spreadsheet behind the table above (50 timestamps per broker plus the news-event captures), get in touch via the contact page and I will send it.
FAQs About CFD Broker Execution Speed
Public Best-Execution Disclosures, by Broker
FCA-regulated brokers are required by MiFID II to publish quarterly best-execution reports (RTS 27) and annual top-five-venue reports (RTS 28). These are public, verifiable, and almost no comparison page links to them. They are the broker's own paper trail on execution quality, and they are useful as a cross-reference against the latency table above.
- Capital.com: Best-execution policy
- Spreadex: Regulatory information and disclosures
- IG: Best-execution disclosures and reports
- Pepperstone: Best-execution policy
- CMC Markets: Best-execution policy
- Saxo: Best-execution policy
Where a broker's published average execution time differs significantly from the latency I measured, the gap usually reflects measurement methodology (server-side acknowledgment versus full client-to-fill round-trip), not deception. Read the methodology footnote on each broker's report before comparing.
References
- Financial Conduct Authority (FCA), Contract for differences | FCA
- Financial Conduct Authority, FCA Register. Available at: register.fca.org.uk
- Bank of England, Monetary Policy Committee meeting dates 2025-2026. Available at: bankofengland.co.uk
- European Central Bank, Governing Council monetary policy meetings. Available at: ecb.europa.eu
- U.S. Bureau of Labor Statistics, Employment Situation release schedule. Available at: bls.gov
- Pepperstone, Razor and Standard account specifications
- CMC Markets, Execution and pricing methodology