%201.svg)
PAT testing is one of the most accessible electrical service businesses to start in the UK. The qualification takes a single day, the equipment costs under £1,000, the demand is genuine and recurring, and the work suits part-time, side-hustle and full-time models equally well.
This post is a complete guide to setting up a UK PAT testing business in 2026 — from qualifications through to securing your first paying clients.
Why PAT testing as a business
A few reasons PAT testing genuinely works as a small business:
Low barrier to entry
A one-day accredited course gives you the qualification. £600-£1,000 covers all the equipment. You can be operational within a week of starting.
Recurring revenue
Unlike many trades where each job is one-off, PAT testing is recurring by design. Every client retests at intervals — typically every 1-5 years. A client landed today is potentially income for the next 10-20 years.
Demand exceeds supply in most areas
The number of UK premises requiring PAT testing (commercial, rental, hospitality, schools, healthcare) far exceeds the number of competent active testers, particularly in regional and rural areas.
Scalable
Start as a sole trader part-time; add capacity by training assistants; expand to multi-site contracts. The business model scales naturally.
Combines with other trades
Many PAT testers are electricians, electrical contractors, facilities managers, or property maintenance specialists who add PAT testing as a natural extension of their existing work.
Step 1: Get qualified
The starting point is proof of proper training. The Electricity at Work Regulations 1989 require a "competent person" — what matters is that you've completed proper training to a recognised standard, not which awarding body issued the certificate.
The City & Guilds Level 3 Award in the In-Service Inspection and Testing of Electrical Equipment (2377-22) is the gold standard if you want it, but it isn't required. What insurers, clients and inspectors actually want to see is documented evidence that you've completed proper training — covering legislation, appliance classes, visual inspection, electrical testing procedures, documentation, pass/fail thresholds and frequency setting.
The course is typically a single day, with theory in the morning and hands-on practical work in the afternoon. A proper PAT testing course covers:
- Legislative and regulatory background
- Classification of appliances (Class 1, 2, 3 and types)
- Visual inspection technique
- Electrical testing procedures
- Documentation and record-keeping
- Pass/fail thresholds
- Risk-based frequency setting
You leave with proof of proper training, the practical skills to start testing immediately, and the knowledge to handle edge cases competently.
Our 1-day PAT testing course runs at training centres across the UK, covering all of the above in a single day with hands-on practice on current-specification testing equipment.
Step 2: Set up the business structure
Decide your business structure:
Sole trader
Simplest setup. Just register as self-employed with HMRC. Lower setup costs but personal liability for business debts.
Best for: testers starting part-time, side-hustle work, those testing the market.
Limited company
More complex setup but separates personal and business liability. Requires accountant for company filing.
Best for: testers planning full-time PAT testing, those expecting significant turnover, those wanting formal corporate structure.
Partnership
If working with a partner or spouse. Less common for PAT testing but viable.
Discuss with an accountant which structure suits your situation. For most starting testers, sole trader is initially fine, with progression to limited company once revenue is established.
Step 3: Get insurance
Insurance is non-negotiable for paid PAT testing work. As covered in our PAT tester insurance post, you need:
- Public liability (£2m minimum) — £150-£250/year
- Professional indemnity (£250k+) — £150-£350/year
- Tools and equipment cover — £80-£150/year
- Vehicle business class if driving for work — £50-£200/year
Combined annual cost: £400-£800 for a sole trader.
Most insurers require evidence of proper training before issuing professional indemnity cover.
Step 4: Buy your equipment
The minimum equipment for paid PAT testing:
- PAT tester: £400-£700 for a mid-range downloading model (the sweet spot for most users)
- Pass/fail labels: £30 for starter pack
- Software: usually included with mid-range testers, otherwise £100-£300
- Carry case: £40-50
- Test leads and probes: £30 for spare/replacement set
- Miscellaneous tools (screwdrivers, wire strippers): £20-30
Total upfront equipment cost: £600-£950 for a complete starter kit.
For the buying guide, see our PAT testing equipment post.
Step 5: Set up your records and processes
Before you start testing for clients, set up:
Asset register template
A spreadsheet or software template for recording each tested appliance. See our record sheet template post for structure.
Certificate template
A standard format for issuing certificates after each visit. See our PAT testing certificate post.
Invoice template
Either through accounting software (Xero, QuickBooks, FreeAgent) or a simple template. Include your business details, VAT status, services provided and payment terms.
Risk assessment
A documented PAT testing risk assessment as covered in our risk assessment post.
Quote template
For responding to enquiries quickly with consistent professional pricing.
Step 6: Set your prices
For pricing strategy, see our PAT testing pricing guide. Key starter pricing:
- Per-item rate: £1.30-£1.60
- Minimum call-out: £50-£60
- Tier discounts for larger jobs
Avoid the temptation to undercut the market — proper pricing is essential for sustainable business.
Step 7: Get your first clients
The hardest step. Several routes work:
Existing connections
Friends, family, neighbours, business associates — anyone with rentals, businesses or premises that need PAT testing. The first client is often the easiest if you've spread the word.
Local landlords and letting agents
Letting agents need reliable testing services. Cold-contact local agents with a clear pricing structure and offer to handle their property testing.
Local trade directories
- Google My Business (free, essential)
- Local chamber of commerce
- Trade-specific directories (Bark, Checkatrade for established testers)
- Yell.com (mixed value)
Networking
- Local trade groups (Federation of Small Businesses, Trade body chapters)
- Estate agent and property management networking events
- Hospitality and holiday let owner groups
Online presence
A simple professional website with:
- Services offered
- Service areas
- Pricing transparency
- Contact information
- Testimonials (start collecting from day one)
Most PAT testers don't need a sophisticated website — just a professional one that converts enquiries.
Social media
LinkedIn for professional client connections. Facebook for local landlord and small business community.
Referral relationships
Develop relationships with:
- Electricians (who refer PAT testing rather than doing it themselves)
- Estate agents (who manage rentals)
- Property managers
- Letting agents
- Compliance consultants
- Insurance brokers
A 20% finder's fee on first jobs is standard for referral relationships.
Cold outreach
Direct mail to:
- Local independent landlords (sourced from Land Registry)
- Holiday let owners (sourced from Airbnb listings)
- HMO landlords (sourced from local authority licensing register)
A simple letter or email introducing your service and pricing converts surprisingly well — particularly to landlords currently using contractors who've raised prices recently.
Step 8: Deliver excellent service
The first 5 clients matter more than any others. They:
- Provide testimonials and referrals
- Establish your local reputation
- Generate the recurring revenue that powers everything else
Excellent service means:
- Punctual arrival (not just on-time, but slightly early)
- Professional presentation (clean clothes, organised equipment)
- Thorough testing (not rushed)
- Same-day or next-day reporting (when promised)
- Clear, jargon-free explanations to clients
- Proactive communication about any issues found
- Faster than competitors
- More accurate than competitors
Each excellent first client creates 2-3 referrals on average. Each disappointing first client creates negative word-of-mouth.
Step 9: Build the recurring revenue base
The unique attraction of PAT testing is recurring work. By the end of your first year:
- Set up testing reminder system (12 months from each client visit)
- Build database of all clients with their test schedules
- Send professional retest reminders 4-6 weeks before due
- Offer multi-property contracts with annual pricing
A typical PAT tester completes their first year with 30-80 clients on recurring schedules. By year 3, that base typically grows to 150-300 clients with predictable revenue.
Step 10: Scale (when ready)
Once your individual capacity is full:
Train assistants
Junior tester or scribe to double daily output. Adds £150-300/week in salary cost but typically doubles revenue.
Specialise in higher-margin niches
HMO portfolios, holiday lets, schools — premium pricing for specialised expertise.
Add complementary services
EICR (with appropriate qualifications), fire safety, gas safety as part of compliance bundles.
Expand geographic territory
Cover wider areas through additional testers or partnerships.
Common mistakes new testers make
Underpricing to win work
The fastest way to burn out and exit the business. Proper pricing is essential.
Working without proper insurance
A single claim can end the business. Don't risk it.
Skipping calibration
Out-of-calibration testers produce questionable results and breach insurance terms. See our calibration post.
Trying to do EICR work without qualifications
PAT testing qualifications don't cover EICR. Don't blur the lines unless you have proper electrician credentials.
Poor record-keeping
The business is built on records. Spend more time getting documentation right than on additional clients.
Free quotes for tiny jobs
Time spent on phone with prospects who never convert is the silent killer of PAT testing margins. Quote standard prices clearly and don't waste time on uncommitted prospects.
Not asking for referrals
The single biggest source of new business is referrals from existing clients. Ask explicitly: "Do you know anyone else who needs PAT testing?"
Realistic income expectations
For a sole trader PAT tester starting part-time:
- Year 1: £5,000-£15,000 alongside other income
- Year 2: £15,000-£25,000 if continuing part-time
- Year 3+: £25,000-£40,000 part-time, or £35,000-£55,000 full-time
For full-time:
- Year 1: £20,000-£35,000 (building client base)
- Year 2: £30,000-£45,000 (recurring revenue establishing)
- Year 3+: £35,000-£55,000 single tester
- With assistants: £60,000-£100,000+
Top earners in the UK PAT testing market clear £80,000+ as sole-trader operations through specialisation in higher-margin niches.
Frequently asked questions
How much does it cost to start a PAT testing business?
Approximately £600-£1,000 for equipment plus £150-250 for the qualification course, plus £400-600/year for insurance — total £1,200-1,750 for full setup. Recoverable within first 6-12 months for most.
Do I need to be an electrician to start a PAT testing business?
No. The law requires a "competent person" — proof of proper training is what matters. A recognised one-day PAT testing course is enough; you don't need to be a qualified electrician.
How long does it take to get a PAT testing qualification?
A standard accredited course takes one day (typically 7-8 hours of instruction plus assessment).
Can I do PAT testing as a side business?
Yes. PAT testing suits part-time, side-business work — many UK testers operate as a complement to other employment or trades.
What insurance do I need?
Public liability £2m minimum, professional indemnity £250k minimum, tools and equipment cover, business vehicle cover. Combined typically £400-800/year.
How do I find my first clients?
Existing connections first, then networking with letting agents, estate agents, property managers, electricians and local business owners. Online presence and trade directories supplement direct outreach.
How long until I'm earning regularly from PAT testing?
Most testers establish steady part-time income within 3-6 months and significant recurring revenue within 12-18 months.
The takeaway
PAT testing is one of the most accessible service businesses to start in the UK. A one-day accredited course, £1,000 in equipment, proper insurance, and a steady client-development effort gets you to viable side-business income within 6-12 months and full-time replacement income within 2-3 years.
The keys to success are: proper qualification (not non-accredited shortcuts), proper pricing (don't undercut), proper insurance (no shortcuts), proper records (the business runs on them), and consistent client service (referrals are everything).
Start with a clear plan, focus on the first 5-10 clients, deliver excellent work, and the recurring revenue base builds itself. Within 2-3 years, you have a sustainable business that scales as you choose.
The barrier to entry is genuinely low — but the barrier to running a quality business that earns properly is exactly what proper qualification, equipment and processes deliver. Get those right from day one and the rest follows.
