How to Start a PAT Testing Business in the UK (2026 Guide)

Starting a PAT testing business in the UK is realistic, profitable, and lower-friction than most skilled trades. But it requires understanding the exact steps, costs, and market position from day one.

This post walks through how to actually start a PAT testing business: what qualifications you need, how much capital to invest, how to price, how to find your first clients, and how to avoid the common mistakes that kill new testers in year one.

Is PAT testing a viable business to start?

Yes, with caveats.

Pros:

Low barrier to entry: you can train in one day
Low capital requirement: less than £2,000 to launch properly
Recurring revenue: businesses need retesting on a cycle
Defensible rates: real costs mean you're not competing on price alone
Scalable solo: one person can earn £30,000-45,000/year

Cons:

Competitive market: many testers in most areas
Physically demanding: you're travelling and bending all day
Client acquisition is hard early on: no track record yet
Requires insurance and compliance: non-negotiable costs
Seasonal variation: schools cause Q1 and Q3 peaks

The verdict: it's viable if you're prepared to build a local client base and price properly. It's not viable if you're expecting to compete on price or work remotely.

Step 1: Get the qualification

You need formal PAT testing training. This is non-negotiable for credibility and insurance.

Duration: 1 day (typically 8 hours)

What it covers:

Electrical safety fundamentals
Visual inspection techniques
Test equipment operation
Record-keeping and documentation
Health & Safety Act requirements
Practical hands-on testing

Cost: £150-250 depending on training provider

Accredited providers: various training companies across the UK

What the qualification proves: you understand electrical safety, you can use test equipment properly, you know the legal requirements. It's a baseline credential, not mastery.

Tip: choose a trainer that includes practical equipment handling, not just theory. You'll be hands-on from day one.

Step 2: Get the right equipment

You need a PAT testing device (the tester), calibration, accessories, and documentation tools.

PAT Tester

Three categories:

Pass/fail testers (£150-400)

Only tell you if something passes or fails
Cheapest option
Good for starting out if price is the constraint
Limitations: no data download, no detailed diagnosis

Downloading testers (£400-1,000)

Download test results to a computer
Generate reports and certificates
Track results over time
Better for larger jobs or repeat clients
Sweet spot for most new testers

Premium/specialist testers (£1,000-2,500+)

Full diagnostic capability
Cloud integration
Advanced analytics
Only justified if you're high-volume or specialist

Recommended for starting: Mid-range downloading tester (£600-800). It's reliable, gives you professional reporting, and doesn't overspend on features you won't use.

Calibration

Your tester must be calibrated to ensure accuracy. Most new testers come with a calibration certificate. Annual recalibration costs £40-80.

Accessories

Carrying case: £30-50
Test leads and adapters: £20-40
Labels (pass/fail/conditional): £10-20 per roll
Documentation template (or software): £50-150
Laptop (if not already owned): £300-500

Total equipment budget: £700-1,200

Step 3: Get insurance

Non-optional. You need three types:

Public Liability Insurance: £150-250/year

Professional Indemnity Insurance: £250-400/year

Tools & Equipment Insurance: £50-100/year (optional but recommended)

Total annual insurance: £450-750/year

Shop around. Some brokers specialising in trades offer package deals.

Step 4: Set up as a business

Open a business bank account (easier with proof of self-employed registration)

Get a business address (can be your home for starting out)

Set up basic accounting (spreadsheet or Xero/FreshBooks for ~£10-30/month)

Cost: £40-100 for the year

Step 5: Create your offering

You're ready to trade. Now define what you offer:

Pricing model (per-item + minimum)

Standard approach:

Per-item rate: £1.40-1.60 (set based on your costs and market)
Minimum call-out: £50-60
No discounting below the minimum on your first 100 jobs (you need revenue to survive)

Service scope

What's included in your price:

Visual inspection of every item
Electrical test (earth continuity, insulation, polarity)
Pass/fail labels applied
Standard certificate issued
Detailed asset register

What's not included (charge extra for):

Repair of failed items
Replacement of failed items
Same-day digital reporting (add £10-20)
Photography of failed items (add £10-15)

Geographic radius

Decide your working area. Starting out, 30 minutes drive time is reasonable. Farther jobs need higher minimums.

Step 6: Get your first clients

This is the hard part. You have no track record. Here's what works:

Local networking

Visit local:

Small businesses (offices, shops, cafes)
Hairdressers, beauty studios
Gyms, fitness studios
Professional services (accountants, solicitors)
Nurseries and childcare settings

Script: "Hi, I'm a qualified PAT tester. Many businesses like yours test electrical equipment annually for insurance and legal compliance. Can I drop a quote? No pressure."

Expect 5-10% conversion on your first 50 visits. That's normal.

Online presence

Build a simple website (Wix, Squarespace, or WordPress: £10-20/month). Include:

What PAT testing is (in plain English)
Your qualification and insurance
Pricing model (transparent costs build trust)
Contact form and phone number
Local SEO: mention your town/region repeatedly

This won't get you clients in month one, but it'll help when prospects Google you after a networking visit.

Google My Business

Claim your local Google Business profile. It costs nothing and helps you rank locally.

Referrals from the start

After your first few successful jobs, ask clients: "We're building our business locally. Would you recommend us to other businesses in the area?"

Referrals are your best clients.

Industry body membership

Join a professional body (IEE, City & Guilds, NAPIT, etc.). Membership costs £50-150/year but can include:

Directories that customers search
Group insurance discounts
Continuing education
Professional credibility

Step 7: Your first year financials

Conservative scenario (part-time, building up):

Assumption: average 40 jobs/month after month 3 (ramping up from month 1)
Average job size: 70 items at £1.50 per item = £105
Monthly revenue (months 4-12): 40 jobs × £105 = £4,200
Annual revenue: ~£30,000 (low months + ramp-up)

Costs:

Insurance: £500
Equipment calibration: £60
Labels and supplies: £100
Website/phone: £200
Travel (mileage): £1,500
Miscellaneous: £150

Total costs: ~£2,500

Gross profit: £27,500

That's £2,290/month take-home, part-time (3-4 days/week of actual testing).

Full-time scenario (aggressive growth, months 6+):

100 jobs/month at £1.50 average
Monthly revenue: £4,500
Annual (months 7-12): £27,000
Total first year (ramp): £45,000

Costs (same): ~£2,500

Gross profit: £42,500

That's £3,540/month take-home from month 6 onward (full-time).

Reality: your first year is likely to be between these two scenarios.

Common mistakes to avoid

Underpricing to win work

The single biggest mistake new testers make. If you price at £0.80 per item to undercut competition, you'll:

Burnout in 18 months
Not cover your costs
Can't afford to keep insurance current
Risk your liability exposure to save on premiums

Price properly from day one. It's better to do 30 good jobs than 60 underpriced ones.

Not getting clients from the start

Don't wait until you're qualified to start contacting businesses. Start networking before your course. People remember who visited them months later.

Buying the wrong tester

Don't buy the cheapest pass/fail tester thinking you'll upgrade. You'll use it on your first client and you're stuck with it. Spend £600-800 on a proper downloading tester that gives you professional output.

Operating without insurance

Self-insure and you're one claim away from ruin. £450-750/year is the cost of not going bankrupt. Pay it.

Working alone without systems

Use a CRM or simple spreadsheet to track:

Which clients are due for retesting
Which clients you've quoted but haven't closed
What you've tested and when

Without this, you'll miss retesting revenue in year two.

No online presence

You won't get enough local visits to sustain a business. A simple website and Google My Business costs almost nothing and doubles your leads by month 6.

When to hire your first employee

You reach the point where you're turning down jobs because you're fully booked. At that point, hiring a second tester doubles your business overnight (if they hit the ground running).

When to hire:

You're consistently turning away 10+ jobs/month
Your revenue is £4,000+/month
You have enough clients to keep 2 people busy

Cost to hire:

Training: £200
Equipment: £700
Salary: £300-400/week starting
Insurance (additional Employers' Liability): £100-200/year

This typically happens in year 2 for successfully growing testers.

The full startup checklist

Month 1:

Enrol on City & Guilds 2377-22 course
Start networking locally (before training)
Research equipment options

Month 2:

Complete training course
Purchase equipment and calibration
Register as self-employed with HMRC
Get insurance quotes

Month 3:

Secure insurance
Open business bank account
Create website/online presence
Launch Google My Business profile
Set pricing and service scope

Month 4 onwards:

Active client acquisition (networking, website, referrals)
First jobs and client feedback
Refine pricing and positioning
Build referral network

Frequently asked questions

Do I need to be an electrician to do PAT testing?

No. The City & Guilds 2377-22 is a standalone qualification. You don't need to be an electrician, but understanding electricity fundamentals helps.

What's the biggest mistake new PAT testers make?

Underpricing. They think dropping to £0.80 per item will win business, then realise they're working for less than minimum wage after costs.

How long before I'm profitable?

Month 1-2: setup costs, zero revenue. Month 3-4: first clients, break-even on equipment. Month 5+: profitable if you're landing jobs consistently.

What if nobody wants PAT testing in my area?

If you've done 100 business visits and not landed a single job, you either need to adjust your pitch or your area genuinely has low demand. Consider a 20-mile radius instead of 5 miles.

Can I do this part-time?

Yes. You can build to 20-30 jobs/month part-time (2-3 days/week) and earn £1,500-2,000/month. Scale from there if you want.

What qualifications do I need?

Just the City & Guilds 2377-22. No GCSEs, no electrician background required.

The takeaway

Starting a PAT testing business is realistic. Budget £2,000-3,000 for equipment, insurance, and setup. Get the PAT testing qualification. Price at £1.40-1.60 per item with a £50-60 minimum. Start networking before you're qualified. Build a website. Keep your costs visible. Do the work well. Get referrals. Scale to 40+ jobs/month and you're earning £2,000-3,500/month.

It's not the fastest way to riches, but it's honest work, the barrier to entry is low, and the recurring revenue model means year two is much easier than year one.