Machine Learning Engineer Salary London: 2026 Benchmarks
The bottom quartile of machine learning engineers in London earns more than the median software engineer across the UK as a whole. According to ONS ASHE 2025 data, the p25 salary for a machine learning engineer in London sits at £58,000 — already well above the UK-wide median for most technical roles. If you've received an offer below that figure, the data suggests you're being underpaid relative to your peers in this city.
This page breaks down what London ML engineers actually earn, what drives pay differences within the role, and how to read your own offer against the benchmarks.
What ONS data says about machine learning engineer salary in London
According to ONS ASHE 2025, the salary distribution for machine learning engineers in London looks like this:
| Percentile | Annual base salary |
|---|---|
| P25 | £58,000 |
| Median (P50) | £80,000 |
| P75 | £108,000 |
The £50,000 gap between the 25th and 75th percentile is wide — wider than in many other technical disciplines. That range reflects genuine variation in seniority, specialisation, and employer type rather than noise in the data. A junior ML engineer at a mid-sized company and a senior ML engineer at a major tech firm are both captured in this distribution.
One figure worth flagging: the median sits at £80,000. If your offer letter shows a base salary below that number, your offer is below the midpoint for this role in this city. That doesn't mean you should automatically reject it — total compensation matters, and equity or bonus structures can close gaps — but the base salary comparison is a clean starting point.
For a detailed breakdown by experience band and sub-specialisation, see the machine learning engineer salary guide for london.
What moves a machine learning engineer's salary up or down in London
Within that £58k–£108k band, several factors reliably shift where an individual lands.
Seniority is the dominant driver. Junior ML engineers (0–2 years) cluster around the p25. Mid-level engineers (3–5 years) tend to sit near the median. Senior and staff-level engineers with 6+ years, or those managing research pipelines, push into the p75 and above.
Specialisation also matters. ML engineers working on large language model infrastructure, computer vision systems for regulated industries (healthcare, autonomous vehicles), or real-time inference at scale tend to command premiums over generalist ML roles. Roles branded as "AI engineer" or "MLOps engineer" sit in an overlapping but distinct salary band.
Employer type creates significant divergence. US-headquartered tech companies paying London market rates (Google DeepMind, Meta AI, Amazon, Microsoft Research) frequently pay above p75 even for mid-level engineers. UK-headquartered financial services firms are competitive at senior levels. Early-stage startups often pay below median base but offer equity that may — or may not — compensate over time.
Sector has a measurable effect. Finance and fintech employers in London typically pay 10–20% above the overall median for comparable seniority. Public sector and non-profit ML roles pay materially less; an ML engineer in a government digital role may earn closer to £55,000–£65,000 regardless of experience.
How bonuses and equity affect total compensation
Base salary is what ONS ASHE captures. Total compensation is often substantially higher — and in some London ML roles, the difference is large enough to reverse a verdict on whether an offer is competitive.
For London ML engineers at larger tech employers, annual cash bonuses of 10–20% of base are common. At p75 base (£108,000), a 15% bonus adds £16,200 — bringing total cash to around £124,000.
Equity (RSUs or options) adds another layer of complexity. US-listed tech companies routinely include £30,000–£80,000 in annual RSU grants for mid-to-senior ML engineers in London. That can make a £90,000 base role at a public tech company worth more in total annual value than a £115,000 base role elsewhere.
When evaluating your offer, separate the components: base salary against the ONS benchmark, bonus as a percentage of base (and whether it's guaranteed or discretionary), and equity value divided by the vesting period to get an annualised figure. CompVerdict's checker lets you enter all three components so the verdict reflects total compensation, not just base. Learn how to evaluate a job offer for a structured walkthrough of this process.
London versus other European cities for ML engineers
London's ML salaries are the highest in Europe by a clear margin when measured in local currency. Eurostat Structure of Earnings Survey data and national statistical sources confirm this pattern across the major tech hubs:
- Amsterdam: The CBS labour accounts show Dutch software and data engineering salaries averaging significantly below London equivalents; senior ML engineers in Amsterdam typically earn €75,000–€95,000 base.
- Berlin: Destatis earnings data puts senior tech engineering salaries in the €70,000–€90,000 range, with ML specialists at the upper end.
- Paris: INSEE earnings statistics indicate senior ML engineers earning approximately €65,000–€85,000, with some premium at large tech employers.
- Madrid: INE Encuesta de Estructura Salarial shows the Spanish market lagging further behind, with senior ML engineer salaries around €50,000–€70,000.
London's p75 of £108,000 exceeds the senior ML engineer ceiling in most European cities. The caveat is cost of living: London's housing costs are substantially higher than Berlin or Madrid, which affects how far that salary stretches. But on gross salary alone, London remains the strongest ML engineering market in Europe.
For a full cross-country comparison, software engineer salaries across Europe covers the broader picture.
Frequently asked questions
What is a competitive machine learning engineer salary in London in 2026?
Based on ONS ASHE 2025 data, a competitive offer sits at or above £80,000 base (the median). A strong offer for an experienced ML engineer is £100,000 or above. Anything below £58,000 base is below the p25 for London — below what three-quarters of ML engineers in the city earn — and warrants scrutiny regardless of what else the package contains.
Is £70,000 a good salary for an ML engineer in London?
£70,000 falls between the p25 (£58,000) and median (£80,000), which CompVerdict would likely classify as a "slightly below market" offer for this role and city. It may be appropriate for a junior engineer or a role with significant equity upside, but for a mid-level engineer with 3+ years of ML experience, it's below the midpoint. Whether to accept depends on total compensation and career trajectory, not base alone.
How does machine learning engineer pay compare to software engineer pay in London?
ML engineers command a premium over general software engineers in London. ONS ASHE 2025 data shows the median ML engineer salary at £80,000, while the broader software developer and engineer category has a lower median. The gap narrows at the senior end and widens at mid-level, where ML specialisation carries a clear premium. Salary benchmarks by role and city shows how different tech roles compare.
How does CompVerdict benchmark ML engineer salaries?
CompVerdict uses ONS ASHE data for UK salary benchmarks, updated annually. You enter your offer details — base salary, bonus, equity, location, role, and experience level — and the tool returns a percentile-based verdict in under 30 seconds. The methodology accounts for total compensation rather than base salary alone. How CompVerdict salary benchmarks work explains the data sources and calculation approach in full.
If you've received an offer as a machine learning engineer in London, the fastest way to know whether it's fair is to run the numbers against the benchmark. CompVerdict — check if your offer is fair takes under 30 seconds, requires no sign-up, and uses ONS ASHE and other official government data sources rather than self-reported crowdsourced figures. Enter your base, bonus, and equity, and you'll get an instant verdict.