How this figure was built. Based on 29 live advertised salaries for this role and region, 2 of which were the source's own estimate rather than an advertised figure.

Methodology: medians reconcile live advertised UK salaries for this role and region; 25th–75th percentiles are shown only where at least 5 live salaried listings back them — they are measured or omitted, never interpolated. Rows marked indicative are anchored to our curated 2026 baseline ranges until enough live data accrues. Listings advertising an implausible annual figure (a mislabelled hourly or daily rate) are excluded rather than converted, because converting one means guessing the hours behind it.

Market view. Base salary is only part of the package: a company vehicle, overtime, standby allowances and door-to-door pay commonly add £5,000–£10,000 to real earnings. Manufacturer product training and safety-critical sector experience (medical, lifts, rail) lift base pay most.

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Field Service Engineer salary — Wales

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