Best Side Hustles for Firefighters in the UK
Firefighters have an unusual working pattern compared with most employees: long shifts clustered together, followed by several consecutive days off. That rhythm rules out anything needing you at a desk every weekday, but it suits work you can block-book into whole free days — which is exactly how most local service businesses operate.
The other advantage is practical competence. Working at height, handling equipment, risk-assessing a site and staying calm with an anxious member of the public are all transferable to hands-on service work. Customers buying a driveway clean or a gutter clear are buying reliability and safe working as much as the job itself.
The main things to settle before you start are employment rules and insurance. Most fire and rescue services require you to declare secondary employment and will consider whether it affects your fitness for duty or creates a conflict of interest, and any work using your professional standing — fire risk assessment, extinguisher servicing, safety training — needs the relevant qualification and cover in its own right. Check your contract and your service's secondary employment policy first.
Results vary considerably. What you earn depends on your local demand, your pricing, how many rest days you actually want to work and how consistently you follow up enquiries.
What helps and what gets in the way
What works in your favour
- Several consecutive rest days that can be block-booked as working days
- Comfortable with physical work, ladders, equipment and outdoor conditions
- Strong risk assessment habits, which reassures customers and keeps you safe
- Used to explaining things calmly to the public — useful when quoting
- A stable main income, so you can price properly instead of taking any job going
What gets in the way
- Shift patterns can clash with the weekday hours some customers prefer
- Secondary employment usually has to be declared and approved
- Fatigue after a run of nights makes back-to-back working days unrealistic
- Anything trading on fire safety expertise needs formal qualification and insurance
- Detached duties or overtime can wipe out a planned working day at short notice
7 side hustles worth considering
Costs and income figures are estimates for guidance only. Actual results depend on your location, experience, pricing, demand and execution.
Idea 1
Pressure washing
Local serviceHands-on2–4 weeks- Startup cost
- £400–£2,500
- Typical income
- £400–£2,200 a month
- Time needed
- 8–16 hours a week
Read the full pressure washing guideWhy it fits
A driveway or patio clean is a self-contained job you can start and finish inside one rest day, with no need to return. The physical side and the equipment handling are familiar territory, and jobs are usually booked days or weeks ahead, so a shift change rarely leaves a customer stranded.
Time commitment
One or two jobs per rest day, typically three to five hours each including setup and drying time.
Main advantage
Highly visible results that generate neighbour enquiries on the same street.
Main drawback
Strongly seasonal, and wet or freezing weather can cancel a planned working day.
Best for
Firefighters who want distinct, finishable jobs rather than ongoing commitments.
Idea 2
Mobile car valeting
Local serviceHands-onPotentially within 7 days- Startup cost
- £300–£2,000
- Typical income
- £400–£2,000 a month
- Time needed
- 8–16 hours a week
Read the full mobile car valeting guideWhy it fits
Valeting is appointment-based, so the diary is entirely yours to set around the watch rota. You can cluster four or five bookings into a single rest day on one estate or business park, and repeat customers rebook on a cycle rather than at short notice.
Time commitment
Three to five bookings on a working day, each roughly one to two hours depending on the package.
Main advantage
Customers rebook regularly, which builds a predictable round over time.
Main drawback
Water access and parking restrictions limit where you can realistically work.
Best for
Those who prefer steady repeat customers to constantly chasing new ones.
Idea 3
Handyman services
Local serviceHands-onPotentially within 7 days- Startup cost
- £300–£2,500
- Typical income
- £500–£3,000 a month
- Time needed
- 8–30 hours a week
Read the full handyman services guideWhy it fits
Small domestic repairs suit someone practical who is already trusted to work safely in other people's homes. Firefighters tend to find quoting straightforward because assessing a job and spotting the hazard in it is already second nature.
Time commitment
Two to four small jobs a day, easily concentrated into whichever days the rota leaves free.
Main advantage
Very low startup cost if you already own a reasonable tool kit.
Main drawback
Scope creep is common — customers add jobs on the day, which pushes your finish time back.
Best for
Confident DIYers who enjoy varied problems rather than repeating one task.
Idea 4
Furniture assembly
Local serviceHands-onPotentially within 7 days- Startup cost
- £80–£500
- Typical income
- £250–£1,200 a month
- Time needed
- 5–15 hours a week
Read the full furniture assembly guideWhy it fits
Assembly work is booked in advance, priced per item and almost always completed within a couple of hours, which makes it easy to slot around an unpredictable rota. It also travels well: the whole business fits in a car boot.
Time commitment
Two to four bookings a day, with each typically one to three hours.
Main advantage
Minimal equipment and no van required to get started.
Main drawback
Job values are modest, so income depends on booking several in a day.
Best for
Anyone wanting the lowest-friction way to test paid local work.
Idea 5
Window cleaning
Local serviceHands-onPotentially within 7 days- Startup cost
- £150–£2,500
- Typical income
- £400–£2,200 a month
- Time needed
- 8–25 hours a week
Read the full window cleaning guideWhy it fits
Working safely at height is routine for firefighters, and a round can be structured so each street is visited on a fixed cycle. Because customers expect you every four to six weeks rather than on a particular Tuesday, a rota change is easy to absorb.
Time commitment
A full round day of five to seven hours, repeated on a fixed cycle.
Main advantage
Genuinely repeat income once a round is established.
Main drawback
Building the round from nothing is slow and involves a lot of door-knocking.
Best for
Those willing to invest several months in building something that recurs.
Idea 6
Garden maintenance
Local serviceHands-onPotentially within 7 days- Startup cost
- £200–£1,500
- Typical income
- £400–£2,200 a month
- Time needed
- 8–25 hours a week
Read the full garden maintenance guideWhy it fits
Grass cutting and general tidying is outdoor, physical and forgiving on timing — most customers care that it was done that week, not which day. That tolerance is exactly what an irregular rota needs.
Time commitment
Three to six gardens in a day during the growing season.
Main advantage
Customers book you on a repeating cycle with very little chasing.
Main drawback
Winter demand drops sharply, so income is uneven across the year.
Best for
People who would rather work outdoors than deal with customers indoors.
Idea 7
Freelance sales and appointment setting
OnlineHome-based2–4 weeks- Startup cost
- £0–£200
- Typical income
- £400–£1,800 a month
- Time needed
- 8–15 hours a week
Read the full freelance sales and appointment setting guideWhy it fits
If you would rather not do more physical work on your days off, quoting and follow-up work for local trades can be done by phone and email in short blocks — including between shifts. The calm, factual manner that works with the public also works when following up a quote.
Time commitment
Short sessions of one to two hours, several times a week, rather than whole days.
Main advantage
No physical demand and no equipment, so it does not affect fitness for duty.
Main drawback
Income is usually tied to results, so early months can be thin.
Best for
Firefighters who want to rest their body but use their people skills.
Not sure which of these actually fits your rota?
These ideas are based on a typical firefighter profile, but your strongest match will depend on your skills, budget, available time and preferred type of work.
Common questions
- Can firefighters run a side business in the UK?
- Generally yes, but almost all fire and rescue services require secondary employment to be declared and approved first. Services typically consider whether the work affects your fitness for duty, your availability, or creates a conflict of interest. Check your contract and your service's secondary employment policy before you take on paying work.
- What side hustles work around a firefighter shift pattern?
- Anything you can book in advance and complete within a day. Pressure washing, valeting, assembly work and garden maintenance all work well because the customer agrees a date with you rather than expecting you at a set weekday hour. Work that needs you contactable during office hours every day is the poorest fit.
- Do I need permission from my employer?
- Usually you need to notify your service and get approval rather than simply informing them afterwards. Requirements differ between services, so read your own policy. Where the work is physically demanding, expect questions about recovery time and fitness for duty.
- Can I use my professional experience in a private business?
- Only with care. Anything that presents you as offering fire safety services — risk assessments, extinguisher servicing, safety training — requires the appropriate qualification, competence and professional indemnity insurance, and may conflict with your employment. General practical competence is different: using your DIY skills for handyman work carries none of the same issues.
- What side hustle can I start for under £500?
- Furniture assembly, handyman work and valeting can all be started well inside that figure if you already own basic tools and use a car rather than a van. Pressure washing and window cleaning typically need more upfront, though hiring equipment for the first few jobs is a common way to test demand before buying.
- Will a side hustle affect my pension or tax?
- Self-employed profit is taxed alongside your employment income and normally requires a Self Assessment return once you pass the trading allowance. It does not usually affect your firefighter pension, but personal circumstances vary — check current HMRC guidance and speak to an accountant if the amounts are significant.
Related guides
Best side hustles for shift workers
Work that tolerates rotating rotas, nights and days off that land in the middle of the week.
Best side hustles for people with a van
Work that turns a vehicle you already own into your main competitive advantage.
Best side hustles for under £500
Equipment-light local services where a few hundred pounds buys a real advantage.
This is general guidance rather than legal, tax or insurance advice. Requirements may vary, so check current official guidance or speak to a suitable professional.