Cybersecurity engineer · London, United Kingdom
Security engineer salary in London — typical band and what it buys
Senior security engineer covering application security, infrastructure security, or detection / response.
Data signals
What the numbers say
The pay band
A security engineer in London typically earns around 110,185 GBP (mid-market), with most offers between 85,394 GBP and 143,241 GBP.
What it nets and supports
After local tax the mid-market figure nets about 6,795 GBP/month — enough to support a premium lifestyle in London.
Versus the New York benchmark
Pay for this role in London runs about 70% of the New York rate before adjusting for cost of living.
Estimated band
Security engineer gross salary in London
Local-currency band derived from a $140,000 NYC P50 anchor × 0.70 city multiplier × 0.7870 GBP/USD.
What £110,185 gross buys you in London
Net after United Kingdom's effective payroll deduction, mapped to Mundevo's lifestyle tiers.
Required monthly net at each tier in London
Where the P50 salary lands across Mundevo's four lifestyle tiers.
| Tier | Required net / month | Your P50 net covers it? |
|---|---|---|
| PremiumBest fit | £5,964 | Yes |
| Comfortable | £4,786 | Yes |
| Balanced | £3,944 | Yes |
| Frugal | £3,103 | Yes |
Real market data
What the market actually pays a security engineer in London
The average advertised security engineer salary in London is £75k across 1,518 live listings — up 20% over the past year (from £58k).
Market salary data via Adzuna (2026-07-11). Advertised gross pay from live listings — compare with our modelled band above.
Who this band describes
Senior security engineers in this band have 5-8 years of experience in offensive (red-team / pentesting), defensive (SOC / detection / response), or product-security (appsec / cloud security) tracks. Specialization matters: cloud-security and appsec command premiums at SaaS companies; detection / response runs higher at financial services.
Pay sits modestly above general-purpose senior SWE bands due to specialization scarcity. Highest at fintech, defense-adjacent tech, and large public tech companies; mid-band at enterprise SaaS and cybersecurity consultancies.
Common employer types at this band: Fintech, Big tech, Cybersecurity vendors, Defense contractors, Enterprise SaaS.
Cross-check before negotiation
Mundevo's band is derived, not surveyed. For an offer conversation, anchor on at least one of these.
- Levels.fyi — security roles at public tech companies
- ISC2 / SANS annual cybersecurity workforce surveys
- Glassdoor — broader cybersecurity coverage
FAQ
- What is a good security engineer salary in London?
- The typical security engineer band in London runs 85,394 GBP–143,241 GBP gross per year, with a median around 110,185 GBP. At or above the median is a strong offer — the P50 here supports a premium lifestyle on our cost model.
- How much does a security engineer take home after tax in London?
- On the median 110,185 GBP gross, take-home is about 6,795 GBP per month (81,537 GBP/year) after United Kingdom's effective income tax and social security.
- Is 110,185 GBP a good security engineer salary in London?
- Yes — it's the local median and covers a premium lifestyle for a single person, with about 14% headroom over that tier's cost.