1200-1800 GBP for scientific leadership.

Interim CSO Scientific Jobs UK

Interim scientific leadership

£800-2,000

Day Rate

2-6 weeks

Time to Hire

50-70%

Cost Savings

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📖1 min read

📅Updated 1 Feb 2026

📝142 words

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£800-1500

Day Rate

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1-3

Days/Week

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50-70%

Cost Savings

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500+

UK Placements

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Key Takeaways

1Fractional CFOs work 1-3 days per week, providing senior expertise without full-time costs
2UK day rates range from £800 to £1500, 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

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Interim CSO Scientific Roles

Quick Definition

Interim CSOs provide full-time scientific leadership. Typical engagements run 6-18 months with day rates from 1200-1800 GBP.

Typical Requirements

Area	Requirement
Qualification	PhD or MD
Experience	15+ years scientific leadership
Track Record	Drug development, regulatory

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Cost Comparison

Fractional vs Full-Time Executive

Full-Time Executive£286k/year

Salary + Benefits + Overhead

Fractional Executive£106k/year

1-2 days/week average

Your Potential Savings

£180k+

63%

saved

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Time Allocation

How fractional executives spend their time

Strategy30%

Operations25%

Leadership20%

Governance15%

Technology10%

Interim Chief Scientific Officer Jobs UK

The interim Chief Scientific Officer provides scientific leadership for pharma, biotech, and life sciences companies. Essential during clinical development, regulatory submissions, and R&D pivots. [Day rates](/fractional-executive-day-rates "Fractional Executive Day Rates") range from £1,100-£1,700.

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Interim CSO (Scientific) Day Rates

Sector	Day Rate	Typical
Pharma	£1,300-£1,900/day	£1,600
Biotech	£1,200-£1,700/day	£1,450
MedTech	£1,100-£1,500/day	£1,300
AgriTech / FoodTech	£1,000-£1,400/day	£1,200

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Key Responsibilities

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Scientific strategy and R&D programme direction

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Clinical development oversight and regulatory strategy

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Scientific advisory board management

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IP strategy and technology licensing

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UK Fractional Executive Day Rates

Compare day rates across C-suite roles

CFOThis Role£800 - £1500/day

£1100

CTO£900 - £1600/day

£1200

CMO£750 - £1400/day

£1000

COO£800 - £1400/day

£1050

CDO£900 - £1450/day

£1150

CISO£900 - £1550/day

£1200

Rate Range

Average

Source: UK Market Data 2025

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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

Fractional CFO Earnings

Calculate Your Potential Income

Your Day Rate

£1,000

£750Avg: £1000£1500

Days Per Client/Week

2.5 days

1 day5 days

Number of Clients

2 clients

Weekly

£5,000

Monthly

£21,650

Annual

£240,000

Based on 2.5 days/week x 2 clients x 48 working weeks. CFO UK average day rate: £1000.

BetaThis calculator provides rough estimates for illustration only. Actual rates and salaries vary based on location, experience, industry, and market conditions.

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