What does “advertised salary” mean?

It is the pay an employer published in the job advertisement itself. These figures are not a survey and not a record of what anyone was actually paid — they carry no bonus, overtime, tips or equity, and an employer may end up paying above or below the range it advertised.

How is the Field Service Engineer median in London calculated?

We take every London advertisement for Field Service Engineer carrying an annual salary over the last 90 days, convert each to a single currency, and report the 25th percentile, the median and the 75th percentile. This cell currently reads £40,000 at the median, with a £36,875–£42,386 range.

Why only 32 postings?

32 is the number of London advertisements that matched in the 90-day window — the real sample, stated rather than rounded up. We publish a figure only once at least 30 postings support it; below that the page is withdrawn rather than showing a number we cannot stand behind.

Where does the data come from, and how often does it update?

Public job advertisements aggregated from boards including Adzuna and Reed, recomputed nightly over a rolling window. We publish aggregate statistics only — no individual listing, no employer name and no advertisement text appears on this site.

Advertised salary · London

Field Service Engineer salaries in London

What employers actually advertised for Field Service Engineer in London over the last 90 days — taken from the pay quoted in public job advertisements, not from a survey.

Median advertised salary

£40,000

25th percentile: £36,875
75th percentile: £42,386
Postings observed: 32

Based on 32 London postings in the last 90 days (27 July 2026–18 September 2026). The middle half of those advertisements quoted £36,875–£42,386 a year.

What this figure is, and what it is not

It is advertised pay. Every number on this page comes from the salary an employer published in a job advertisement.
It is not a survey. Nobody was asked what they earn, and no figure here is self-declared by an employee.
It is base pay only. Bonus, tips, overtime, equity and benefits are outside what an advertisement usually quotes, so they are outside this figure.
An offer can differ. An employer may settle above or below the range it advertised.

Sources and method

Aggregated from public job listings on boards including Adzuna and Reed. We publish aggregate statistics only — no individual listing, no employer name and no advertisement text appears anywhere on this site. Advertisements without an annual salary, and those quoting a day rate, are excluded rather than converted.

Last computed 19 September 2026. These pages are recomputed nightly over a rolling 90-day window. A page is withdrawn — rather than frozen at a stale number — if fewer than 30 postings support it.

Read the full methodology — how an observation is formed, what is excluded, and why an advertisement without a stated salary is dropped rather than estimated.

Data generation: run-2026-09-19T02:40:01.005Z. Also available as markdown at /salary/london/field-service-engineer.md.

Questions about this figure

What does “advertised salary” mean?: It is the pay an employer published in the job advertisement itself. These figures are not a survey and not a record of what anyone was actually paid — they carry no bonus, overtime, tips or equity, and an employer may end up paying above or below the range it advertised.
How is the Field Service Engineer median in London calculated?: We take every London advertisement for Field Service Engineer carrying an annual salary over the last 90 days, convert each to a single currency, and report the 25th percentile, the median and the 75th percentile. This cell currently reads £40,000 at the median, with a £36,875–£42,386 range.
Why only 32 postings?: 32 is the number of London advertisements that matched in the 90-day window — the real sample, stated rather than rounded up. We publish a figure only once at least 30 postings support it; below that the page is withdrawn rather than showing a number we cannot stand behind.
Where does the data come from, and how often does it update?: Public job advertisements aggregated from boards including Adzuna and Reed, recomputed nightly over a rolling window. We publish aggregate statistics only — no individual listing, no employer name and no advertisement text appears on this site.

What this figure is, and what it is not

Sources and method

More from London

Questions about this figure