Small business security audits and setup

Review small firms' systems, fix weak spots and set up protection, working mostly remotely on set-price or retainer deals.

A security specialist analysing code and threat data on multiple computer screens.
Startup cost£500 to £3.5k
Monthly revenue£800 to £4.5k
Time needed10+ h/week
First incomeMonths
  • £500-3.5k
  • Part-time
  • Online

Estimates for a small start in the UK, not guarantees.

Official data

91,318 UK companies in this field, 34% registered in the last 2 years

SIC 62090 “Other information technology service activities”. Source: Companies House, November 2026.

What it is

Security reviews for small businesses: checking passwords, updates, email protection, backups and staff access, then fixing gaps and writing a plain-English report. Many clients also want help working towards Cyber Essentials.

Your first three steps

  1. Build a simple audit checklist and report template, and decide a fixed price for a standard small-business audit
  2. Look into relevant training or certifications, such as the Cyber Essentials scheme or a recognised security qualification
  3. Approach a few local small firms, accountants or business groups with a free short security health check
Who pays

Small firms such as accountants, solicitors, clinics, shops and trades businesses that hold customer data but have no IT staff.

How it makes money

Fixed fee per audit and setup project, with an optional monthly retainer for monitoring, updates and staff awareness sessions.

Skills that help
  • Solid networking and systems knowledge
  • Clear report writing for non-technical owners
  • Professional, discreet manner with business data
Watch out for
  • Professional indemnity insurance, and consider cyber liability cover, as mistakes can be costly for clients
  • Written scope and permission before testing or accessing any system, as unauthorised access can be a criminal offence
  • Data protection duties under UK GDPR, check whether you need to register with the ICO
  • Don't promise clients they will be fully secure, and keep wording in contracts careful
  • Clients may ask for certifications or references, so check what larger customers expect

🔒 Full research report for UK

Real cost breakdown with current prices, licences and registration checklist, local competition, pricing, break-even and a 30-day launch plan, with sources.

Coming soon

Questions people ask

How much does it cost to start a security audit business?

Startup costs are typically around £500 to £3,500, depending on your equipment, software and insurance cover. These are estimates, so check quotes for professional indemnity and any cyber liability cover before you start.

How much can I earn from small business security audits?

Monthly revenue is typically around £800 to £4,500, depending on whether you sell set-price audits or retainers and how many clients you take on. These figures are estimates rather than guarantees.

What legal points should I check before offering security audits?

Check you have professional indemnity insurance and consider cyber liability cover. Agree written scope and permission before accessing any system, as unauthorised access can be a criminal offence. Also check your UK GDPR duties and whether you need to register with the ICO.

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