What plumbers and gas engineers actually earn in the UK

Pay by stage: a rough map

No two trade careers pay the same, but the shape is fairly consistent: lean while you are learning, steadier once you are qualified and reliable, and potentially higher self-employed — if you can cover the costs and keep the work coming. As a rough guide in 2026:

• Plumber's mate or labourer — often roughly £90–£130 a day, more in higher-cost areas. Modest pay, but it buys you the on-site experience everything else depends on.
• Apprentice — a training wage that starts low, often near the apprentice rate of the National Minimum Wage in the first year, and steps up each year as your competence grows. You are paid to learn, which is the trade-off.
• Newly-qualified, employed — as a rough guide, somewhere in the high-£20ks to low-£30ks a year, depending on the employer, the region and whether you hold any gas tickets.
• Experienced, employed — comfortably into the £30ks for a solid all-rounder, with £40k-plus realistic once you add gas ACS, a specialism, or work in and around London.
• Self-employed — a day rate often quoted at roughly £150–£250 or more, higher in London and the South-East. Read the next sections before you get excited: that number is turnover, not wages.

The "earn £35k" advert vs your actual basic

OTE means on-target earnings: the total pay expected when the stated performance targets are met, normally basic salary plus variable pay such as commission or bonuses. It is not another name for a self-employed business’s turnover. If a job advert includes overtime or call-out payments in its headline, ask for those assumptions separately.

For a household budget, start with the guaranteed basic pay in writing. Ask how the additional pay is earned, whether extra hours are required and what happens when targets are missed. Gross salary, conditional earnings and self-employed sales income are different figures; none is automatically your take-home pay.

Employed vs self-employed: gross is not take-home

The most common mistake is comparing a self-employed day rate against an employed salary as if they are the same money. They are not. A £200 day rate sounds like roughly £50k a year, but you rarely see every week at full rate, and a long list of costs comes out before anything reaches your pocket:

• Van — finance or lease, fuel, insurance, servicing, tyres and the occasional big repair.
• Tools and their replacement, plus calibrated test equipment if you are on gas.
• Public liability insurance, and Gas Safe registration plus ACS reassessment costs for gas work.
• Your own pension — no employer is paying into one for you.
• No holiday pay and no sick pay: a week off, ill or away, is a week unpaid.
• Quiet spells and gaps between jobs, plus all the unpaid time spent quoting, ordering, invoicing and chasing payment.
• Tax, National Insurance and usually an accountant — set the money aside or it bites at year end.

Where you work changes the number

Geography moves pay as much as experience does. London and the South-East pay the highest rates — employed and self-employed — because demand and the cost of living are higher and customers expect to pay more. Much of the North, Wales, the South-West and rural areas sit lower on headline pay, though costs and competition are usually lower there too, so the gap in what you actually keep is smaller than the day rates suggest.

Demand matters as much as the map. A reliable gas engineer in an area short of them can charge confidently wherever they are; an oversupplied patch holds rates down even in a city. Local reality beats any national average.

What actually lifts your pay

If you want the number to grow, a few things move it far more than simply clocking up years:

• Gas ACS tickets — getting onto the Gas Safe Register and adding modules (CCN1, CENWAT, CKR1, HTR1, MET1, CPA1 and the rest) opens better-paid work that plumbing alone does not reach.
• Specialising — commercial gas, heating systems, and increasingly heat pumps and low-carbon heating tend to pay above general domestic work, and demand for the low-carbon side is growing.
• Going self-employed well — not just leaving to go solo, but running it properly: pricing to cover your real costs, keeping the diary full and managing cashflow.
• Reputation and reliability — turning up, doing clean work, being recommended. Word of mouth is what lets you raise rates without losing customers, and it is the slowest but most durable lever of all.

So — will it pay off?

Honestly, for most people, over time, yes — but not in the way the adverts imply. The trade rarely makes you rich quickly, and the early years as a mate, apprentice and newly-qualified hand are lean while you build the experience everything else rests on. What it does offer is a skill that stays in demand, a clear path to decent and rising pay, and the option — not a guarantee — of earning more by specialising or going self-employed.

Treat the big advertised figures as a ceiling a minority reach after years of graft and risk, not a starting salary. Aim for the steady, durable middle — qualified, ticketed, reliable, in demand — and the money tends to follow. Just give it the time the headlines leave out.