What is a CISO?
Understanding the Chief Information Security Officer role
Key Takeaways
- 1Fractional CISOs work 1-3 days per week, providing senior expertise without full-time costs
- 2UK day rates range from £900 to £1550, depending on experience and sector
- 3Typical engagements save 50-70% compared to full-time executive hires
- 4Ideal for startups, scale-ups, and SMEs needing strategic leadership
- 5No employment overhead: no pension, NI, benefits, or notice periods
A CISO (Chief Information Security Officer) is a senior executive responsible for an organisation overall information security strategy. They protect company data, systems, and infrastructure from cyber threats while enabling business objectives.
CISO Responsibilities
Develop and implement cybersecurity strategy
Manage security budget and team
Report to the board on security posture and risks
Ensure compliance with regulations (GDPR, PCI-DSS, etc.)
Lead incident response and crisis management
Evaluate and manage security vendors
Build security awareness across the organisation
Balance security requirements with business needs
CISO Salary UK
Full-time CISOs in the UK earn £120,000-£250,000+ depending on company size and industry. Fractional CISOs typically earn £1,000-£1,500 per day.
Cost Comparison
Fractional vs Full-Time Executive
Your Potential Savings
£197k+
Time Allocation
How fractional executives spend their time
UK Fractional Executive Day Rates
Compare day rates across C-suite roles
Fractional vs Interim vs Full-Time
Choose the right engagement model
| Aspect | Fractional | Interim | Full-Time |
|---|---|---|---|
| Time Commitment | 1-3 days/week | 4-5 days/week | 5 days/week |
| Duration | Ongoing/flexible | 3-12 months | Permanent |
| Annual Cost | £50-150k | £150-300k | £200-400k+ |
| Best For | SMEs, startups, scale-ups | Crisis, transitions | Large enterprises |
| Flexibility | ★★★ High | ★★☆ Medium | ★☆☆ Low |
Costs are indicative UK market rates. Actual costs vary by role, experience, and sector.
Calculate Your Day Rate
Calculate Your Potential Income
Based on 2.5 days/week x 2 clients x 48 working weeks. CISO UK average day rate: £1350.
BetaThis calculator provides rough estimates for illustration only. Actual rates and salaries vary based on location, experience, industry, and market conditions.
Related Executive Roles
Complementary leadership for your organisation
Frequently Asked Questions
Everything you need to know
CISO stands for Chief Information Security Officer. It is a C-level executive role responsible for an organisation cybersecurity strategy and operations.
Industry Resources & Authority Links
Related Pages
The Fractional Executive Trend
Industry data on the rise of fractional leadership
of executives who moved to fractional work report higher job satisfaction
Source: Harvard Business Review ↗Platform Stats
Founder's background
📊 CISO Market Snapshot
💰 CISO Day Rates
Based on 2026 market data for UK CISO roles.
