Careers in
plumbing
Most people picture a plumber under a sink with a bucket. That is one afternoon of one job. This unit lays out what the trade actually contains, who employs plumbers, what the work pays, and which direction you can take it once you are qualified — so that everything after this has somewhere to go.
What plumbers actually do
The shape of the tradePlumbing is the trade that moves water and gas around a building and takes the waste away again. That is a wider job than it sounds. Every bathroom, kitchen, boiler, radiator, gutter, drain, sprinkler head and heat pump in the country was put in by someone in this trade, and every one of them will eventually need someone to come back and fix it.
The work divides into four things you will do over and over, whatever sector you end up in:
First and second fix
Putting new pipework, boilers, bathrooms and heating systems into buildings. First fix is the pipe in the walls and floors before plastering. Second fix is everything you can see afterwards.
Planned maintenance
Annual boiler services, safety checks, landlord gas certificates, descaling, flushing systems. Steady, bookable, and the backbone of most established businesses.
Fault finding
Leaks, blockages, no hot water, cold radiators. This is the part that rewards diagnosis. Anyone can change a part; the money is in knowing which part.
Surveying and quoting
Looking at a job, working out what it needs, pricing it and explaining it to a customer who does not speak plumbing. Unit 06 covers this properly.
Plumbing and gas are two different things. Every gas engineer started as a plumber; not every plumber works on gas. Gas work is legally restricted to people on the Gas Safe Register, and getting there is a separate qualification on top of your plumbing one. Unit 05 sets out how that works.
Explore the roles
Pick a role to see what it takesNine directions the trade opens up. They are not a ladder — plenty of people move sideways between them across a career, and a few run two at once. Tap through them and pay attention to the What you need line, because that is what Units 04 and 05 are going to get you.
Earnings are typical ranges, not promises. What you actually earn depends on where you work, whether you are employed or self-employed, what tickets you hold and how good you are. The one reliable pattern is that the qualifications with a legal gate in front of them — gas, unvented, renewables — pay more, because fewer people hold them.
What the trade pays
And what the headline figures hide| Stage | Typical earnings | What sits behind it |
|---|---|---|
| Apprentice, year 1 | £8.00 / hour | The apprentice minimum wage from April 2026. Many employers pay above it, and it rises as you progress. |
| Newly qualified, employed | £26k – £32k | Level 2 and an NVQ behind you, still building speed. |
| Experienced, employed | £32k – £42k | The UK median for a full-time plumber sits around £37,900. |
| Gas Safe registered | £38k – £50k | ACS assessments and annual registration; the gate is what creates the premium. |
| Heat pump / low carbon | £48k – £62k | Roughly £7k–£10k above a standard domestic plumber. |
| Supervisor, estimator, site lead | £55k + | Usually commercial work, and usually after ten years on the tools. |
| Self-employed sole trader | £45k – £70k turnover | Turnover, not wages. Van, fuel, insurance, tools, materials, registration, accountant and unpaid admin all come out of that first. |
The number that catches people out. A plumber charging £45 an hour is not earning £45 an hour. Out of a working day come the hours spent quoting, driving, collecting materials and chasing invoices — and none of those are chargeable. A realistic self-employed week bills about 25 to 30 hours out of the 45 to 50 you actually work.
Unit 06 turns this into a calculator so you can see it for your own numbers rather than taking anyone's word for it.
Employed or self-employed
The real trade-offSomeone else carries the risk
A wage that arrives whether the phone rings or not, holiday pay, sick pay, a pension, training paid for, and a van and tools you did not buy. Your ceiling is lower and someone else decides the diary.
Suits anyone starting out, anyone who wants their training funded, and anyone with fixed outgoings.
You carry it, and you keep it
Higher ceiling, your own diary, your own customers. Also: no work means no money, you fund your own tools, van, insurance and training, and you do the books.
Suits people with a few years' experience, a customer base and a cash buffer. It is a poor first move.
Almost nobody starts self-employed and it is not a good idea to try. You need the competence to work unsupervised, the speed to price a job and still make money on it, and enough of a reputation that people call you. All three take time on someone else's jobs first. The usual pattern is three to five years employed, then out on your own.
Is this trade for you?
An honest self-checkNo scoring, no result screen. Read the six statements and be straight with yourself about which ones are true.
Ticking six does not make you a plumber and ticking two does not rule you out. The last one is the only one worth taking seriously as a barrier, and even then there are roles in the trade — estimating, design, supervision, teaching — that ask far less of your knees.
Check what you have taken in
8 marksA newly qualified plumber with a Level 2 Diploma and an NVQ is asked to replace a gas boiler. What is the position?
A self-employed plumber reports a turnover of £60,000. What does that figure tell you about what they take home?
Heat pump and gas roles pay noticeably more than general domestic plumbing. What is the main reason?
Why is starting self-employed straight after qualifying usually a poor move?
Produced for EAL Learn+.
Introduction to Plumbing — a 30-hour pre-apprenticeship short course.