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Average CAS Engineer Salary in United Kingdom for 2026

A CAS engineer in United Kingdom earns about 65,700 GBP a year. That's 6% below the national average of 69,700 GBP.

Pay ranges widely from country to country and from role to role. The lowest reported salaries in United Kingdom sit around 33,300 GBP a year, while the very top stretches to 105,800 GBP. Everything on this page is in British pound (GBP, symbol £), which lets you compare numbers like-for-like without worrying about exchange rates.

The numbers here are pulled together from official government wage data, large independent salary surveys, and aggregated worker-reported pay. Most reported salaries include the benefits that are common in United Kingdom, such as housing or transport allowances, which is worth keeping in mind if you're comparing against a country where those are usually paid on top.

To turn a gross salary in United Kingdom into a take-home figure, use our United Kingdom salary after tax calculator, which works the latest tax brackets and contributions through the math for you.

How much does a CAS engineer make in United Kingdom?

Average salary
65,700 GBP
5,475 GBP per month
Lowest reported
33,300 GBP
2,775 GBP per month
Highest reported
105,800 GBP
8,816 GBP per month

A typical CAS engineer working in United Kingdom brings home around 5,475 GBP a month before tax. Entry-level pay starts near 33,300 GBP, and the top of the ladder reaches roughly 105,800 GBP for the most experienced and specialised people in the role.

The wide gap between low end and top end reflects how much pay can vary inside the same job title. A junior CAS engineer working at a small local employer earns very different money from a senior at a multinational. Skills, employer, city and years in the seat all push the number around. For a cross-country comparison, see the CAS engineer salary in Guernsey or Jersey, both of which pay in the same currency.

How CAS engineer pay ranges in United Kingdom

A good way to think about salary in United Kingdom is to look at the distribution rather than the headline average. Half of all CAS engineers in United Kingdom earn less than 69,800 GBP a year, and the other half earn more. That middle number is the median, and it is usually more useful than the average for answering "is my pay normal here".

Looking at the quartiles fills in the picture. A quarter of earners take home less than 46,400 GBP (the 25th percentile), and a quarter clear 87,800 GBP (the 75th percentile). The middle 50% of CAS engineers sit somewhere inside that band, which is where the typical reader of this page probably lives.

The very lowest reported salaries sit around 33,300 GBP. The highest stretch to 105,800 GBP, though only a small fraction of earners ever reach that level. If you are deciding whether your own offer or current pay is reasonable, work out which of those four bands you would fall into and use that as your reference point.

33,300
Low
69,800
Median
105,800
High
46,400
25th
87,800
75th
The middle 50% sit between the 25th and 75th percentile Tails are the lowest and highest reported All figures in GBP

CAS engineer pay by experience in United Kingdom

Years of experience is the single biggest lever on pay for a CAS engineer in United Kingdom, ahead of education and almost any other single factor. The longer you have been in the role, the more your employer can trust you to handle complexity, mentor others and act independently, all of which command higher pay. The chart below shows how the typical CAS engineer salary changes as you move through the career ladder.

  • 0-2 Years
    38,000 GBP
  • 2-5 Years
    +29% from previous
    49,200 GBP
  • 5-10 Years
    +38% from previous
    67,800 GBP
  • 10-15 Years
    +24% from previous
    84,300 GBP
  • 15-20 Years
    +12% from previous
    94,100 GBP
  • 20+ Years
    +4% from previous
    98,000 GBP

The single largest jump on the ladder is from 2 - 5 Years to 5 - 10 Years, where pay rises by about 38%. That is the point at which a CAS engineer typically goes from "competent in the role" to "the person other people in the team learn from", and the market pays well for that step.

CAS engineer pay by education in United Kingdom

Education sits alongside experience as one of the biggest factors driving CAS engineer pay in United Kingdom. Higher qualifications consistently pull higher salaries, but the size of the gap tends to be smallest at junior levels and widens as people move up. Two people in the same role with the same years of experience but different degrees can end up earning very different money once they reach mid-career.

Below is the average CAS engineer salary in United Kingdom broken down by the highest level of education a worker has completed.

  • High School
    49,400 GBP
  • Certificate or Diploma
    +15% from previous
    57,000 GBP
  • Bachelor's Degree
    +32% from previous
    75,400 GBP
  • Master's Degree
    +26% from previous
    95,100 GBP

CAS engineer gender pay gap in United Kingdom

The gender pay gap is a stubborn feature of almost every labour market, and United Kingdom is no exception. Male CAS engineers in United Kingdom earn an average of 68,400 GBP a year, while female CAS engineers earn around 65,800 GBP. That works out to a 4% gap in favour of men, even when comparing people doing the same work.

A pay gap of this size has a real long-term cost. Over a typical thirty-year career it can add up to several years of pay, and it compounds through pensions, retirement contributions and bonus-linked stock. Some of the gap is explained by women being more likely to work part-time, take career breaks, or be steered toward lower-paying specialisations. Some of it is straightforward unequal pay for the same job, which is harder to defend.

CAS Engineer gender pay gap

4%

Men earn this much more than women on average in United Kingdom.

Men 68,400 GBP
Women 65,800 GBP

Pay raises for a CAS engineer in United Kingdom

Most countries hand out at least some kind of pay raise every year, typically when an employee's contract is reviewed or as a cost-of-living adjustment to keep wages roughly in step with inflation. The rhythm and size of those raises varies hugely between industries.

A typical worker doing this role in United Kingdom sees a raise of about 12% every 15 months, which works out to roughly 10% on an annual basis. That figure is the typical underlying rate; in years where inflation runs high you can usually expect a bit more, and in flat-economy years a bit less.

Across all jobs in United Kingdom, the national average raise is around 9% every 15 months.

By industry

Industries with the highest pay raises in United Kingdom:

  • Banking
  • Energy
  • Information Technology
  • Healthcare
  • Travel
  • Construction
  • Education

By experience level

Experienced workers tend to see larger raises. Retaining a senior is cheaper than replacing them, so employers fight harder for them.

  • Junior Level
    3% - 5%
  • Mid-Career
  • Senior Level
  • Top Management

CAS engineer bonus rates in United Kingdom

Bonuses are the other half of total compensation, and they vary a lot between jobs and industries. Some roles are paid almost entirely in base salary; others lean heavily on bonus structures tied to revenue, project completion or company performance. Whether a job pays a bonus, how big it is, and how often it lands all factor into whether the headline salary is actually a good offer.

33%

33% of CAS engineers in United Kingdom reported a bonus of some kind in the past twelve months. That makes a CAS engineer a low-bonus role overall, which is useful context when you're weighing up a job offer where the base is below market.

Among those who did receive a bonus, the size of the payment varied substantially. Reported bonuses ranged from 0% to 4% of base salary. The remaining 67% of CAS engineers reported no bonus at all over the same period.

Which careers pay bonuses in United Kingdom

Revenue-facing roles tend to pay the biggest bonuses. Operational and support roles tend toward smaller, more predictable ones.

  • Finance
  • Architecture
  • Sales
  • Business Development
  • Marketing / Advertising
  • Information Technology
  • Healthcare
  • Insurance
  • Customer Service
  • Human Resources
  • Construction
  • Transport
  • Hospitality

CAS engineer: public vs private sector pay

Public-sector pay in United Kingdom is about 7% more than private-sector pay for similar work. The private sector typically offers stronger upside and bigger bonuses; the public sector typically offers better benefits and stability.

Public vs private pay gap

6%

Public-sector workers earn this much more than private-sector workers in United Kingdom on average.

Public sector 72,700 GBP
Private sector 68,200 GBP

CAS engineer salary by city and region in United Kingdom

CAS engineer pay is not even across United Kingdom. The chart below shows the highest-paying cities and regions in the dataset, followed by the full location table.

  • England
  • Scotland
  • London
  • Manchester
  • Birmingham
  • Cardiff
  • Leeds
  • Leicester
  • Bristol
  • Liverpool
LocationTypeAverageMedianRange
EnglandRegion130,400 GBP134,700 GBP63,400-206,100 GBP
ScotlandRegion99,700 GBP94,900 GBP53,300-153,800 GBP
LondonCity83,700 GBP90,000 GBP39,500-128,400 GBP
ManchesterCity81,400 GBP81,400 GBP39,800-128,200 GBP
BirminghamCity80,900 GBP84,800 GBP35,200-128,200 GBP
CardiffCity79,600 GBP78,200 GBP42,000-123,000 GBP
LeedsCity78,700 GBP83,800 GBP37,800-127,700 GBP
LeicesterCity78,500 GBP74,300 GBP40,700-121,800 GBP
BristolCity78,100 GBP81,200 GBP39,400-121,800 GBP
LiverpoolCity77,300 GBP75,900 GBP38,000-119,700 GBP
NottinghamCity77,300 GBP73,300 GBP42,400-118,900 GBP
BradfordCity77,300 GBP77,300 GBP39,600-121,800 GBP
GlasgowCity77,100 GBP81,600 GBP39,500-124,500 GBP
WolverhamptonCity76,800 GBP84,200 GBP33,300-123,000 GBP
PlymouthCity75,500 GBP79,600 GBP34,300-118,900 GBP
SheffieldCity75,400 GBP76,900 GBP36,800-117,100 GBP
EdinburghCity75,000 GBP68,200 GBP39,800-114,600 GBP
DerbyCity74,900 GBP76,000 GBP40,500-115,600 GBP
CoventryCity74,300 GBP80,000 GBP36,500-119,700 GBP
NewcastleCity74,000 GBP67,900 GBP40,000-108,200 GBP
SomersetCity73,800 GBP72,700 GBP39,100-114,300 GBP
BelfastCity73,500 GBP77,300 GBP36,400-116,400 GBP
Kingston upon HullCity73,300 GBP68,500 GBP39,800-112,700 GBP
AberdeenCity73,100 GBP67,800 GBP40,500-109,700 GBP
DundeeCity73,100 GBP74,500 GBP33,300-112,700 GBP
SouthamptonCity72,700 GBP67,800 GBP37,800-108,200 GBP
SwanseaCity72,300 GBP69,700 GBP41,100-112,700 GBP
PooleCity71,200 GBP71,600 GBP36,800-112,700 GBP
YorkCity70,800 GBP70,800 GBP33,600-107,700 GBP
NorwichCity69,800 GBP70,000 GBP34,000-109,000 GBP
GloucesterCity69,800 GBP63,900 GBP36,700-105,200 GBP
DerryCity69,700 GBP66,000 GBP35,600-105,200 GBP
PortsmouthCity69,700 GBP74,300 GBP34,100-112,700 GBP
PeterboroughCity69,400 GBP66,100 GBP37,300-109,000 GBP
BrightonCity69,400 GBP66,900 GBP36,500-107,700 GBP
CambridgeCity69,100 GBP63,700 GBP34,800-105,200 GBP
HartlepoolCity68,800 GBP69,400 GBP35,400-109,000 GBP
LisburnCity67,800 GBP69,400 GBP32,300-107,700 GBP
OxfordCity67,800 GBP69,400 GBP32,300-107,700 GBP
NewportCity67,500 GBP73,500 GBP29,400-107,700 GBP
LincolnCity67,400 GBP69,600 GBP30,200-105,800 GBP
ArmaghCity67,300 GBP63,700 GBP36,800-103,600 GBP
CanterburyCity66,900 GBP68,400 GBP32,200-105,200 GBP
WinchesterCity66,900 GBP64,500 GBP35,100-99,700 GBP
SalisburyCity66,400 GBP63,200 GBP34,900-100,700 GBP
ExeterCity66,400 GBP66,400 GBP34,000-105,800 GBP
WalesRegion66,000 GBP58,500 GBP33,600-96,400 GBP
KirkwallCity66,000 GBP67,800 GBP28,900-103,600 GBP
Northern IrelandRegion65,800 GBP71,200 GBP30,300-105,800 GBP
NewryCity65,400 GBP61,400 GBP35,300-99,700 GBP
TruroCity64,600 GBP68,900 GBP29,400-100,700 GBP
ChesterCity64,500 GBP59,900 GBP35,100-96,800 GBP
AbingdonCity64,200 GBP69,200 GBP29,100-102,700 GBP
WakefieldCity63,900 GBP60,000 GBP32,900-97,200 GBP
StirlingCity63,700 GBP64,900 GBP32,900-101,400 GBP
InvernessCity63,700 GBP63,100 GBP35,500-100,400 GBP
StrontianCity63,100 GBP63,100 GBP29,400-95,200 GBP
DurhamCity63,000 GBP67,500 GBP29,300-97,300 GBP
StromnessCity62,600 GBP64,400 GBP26,300-96,400 GBP
St DavidsCity62,100 GBP62,100 GBP28,900-93,800 GBP
BangorCity61,500 GBP66,900 GBP30,800-100,400 GBP
RiponCity61,200 GBP61,200 GBP32,200-95,900 GBP
WellsCity60,700 GBP63,800 GBP27,200-94,000 GBP

CAS Engineer in United Kingdom: FAQs

  • How much does a CAS engineer make per month in United Kingdom?

    A CAS engineer in United Kingdom earns about 5,475 GBP a month before tax, based on an annual average of 65,700 GBP.

  • What's the salary range for a CAS engineer in United Kingdom?

    Entry-level CAS engineers in United Kingdom start near 33,300 GBP. Top-end pay reaches around 105,800 GBP. The middle 50% of earners sit between 46,400 and 87,800 GBP.

  • Is the median CAS engineer salary in United Kingdom higher or lower than the average?

    The median is 69,800 GBP, higher than the average of 65,700 GBP. Half of CAS engineers in United Kingdom earn below the median, half earn above it.

  • What's the gender pay gap for CAS engineers in United Kingdom?

    Men working as a CAS engineer in United Kingdom earn around 4% more than women on average (68,400 vs 65,800 GBP a year).

  • Do CAS engineers in United Kingdom get bonuses?

    About 33% of CAS engineers in United Kingdom reported a bonus in the past 12 months. Reported bonuses ranged from 0% to 4% of base salary.

  • Do CAS engineers earn more in the public or private sector in United Kingdom?

    In United Kingdom, the public sector pays a CAS engineer about 7% more on average. Public-sector pay tends to be steadier; private-sector pay tends to offer bigger upside.

  • How often do CAS engineers in United Kingdom get a pay raise?

    A CAS engineer in United Kingdom sees a raise of around 12% every 15 months, equivalent to roughly 10% a year.