Interim Head of Finance

Location: Hybrid, London (1 day per week in the office)
Hours: Part-time, 22.5 hours per week (3 days)
Contract: Initially 3 months with potential for extension
Salary: £30.68 per hour (+ £3.70 holiday pay) £60,000 FTE
Start Date: ASAP

We are seeking an experienced Interim Finance Lead to join a growing grant-making and social impact organisation during an exciting period of expansion. This is a hands-on role for a technically strong charity finance professional who can provide leadership across fund accounting, financial planning, governance, and reporting.

Working closely with senior leadership, you will play a key role in ensuring robust financial management, strengthening financial controls, and supporting strategic decision-making as the organisation continues to grow and increase its funding activity. The role offers a high degree of autonomy and would suit someone who enjoys balancing strategic oversight with hands-on financial delivery.

Key Responsibilities

• Lead on fund accounting, ensuring accurate management of restricted and unrestricted funds.

• Review and strengthen financial controls, reporting processes, and governance arrangements.

• Support year-end processes, statutory reporting, and audit preparation.

• Develop and improve budgeting, forecasting, and cashflow management processes.

• Provide clear financial analysis and reporting to support organisational decision-making.

• Produce meaningful financial information for senior leadership and trustees.

• Review financial systems and processes, identifying opportunities for improvement.

• Support donor and grant reporting, ensuring compliance with funding requirements.

• Partner with senior stakeholders to provide expert financial guidance and challenge where appropriate.

• Work collaboratively with finance colleagues to develop best practice and strengthen financial management across the organisation.

About You

• Qualified accountant (ACA, ACCA, CIMA, CIPFA or equivalent) or qualified by significant relevant experience.

• Strong experience within the charity, grant-making, foundation, NGO, or wider not-for-profit sector.

• Excellent knowledge of Charity SORP, fund accounting, and charity finance compliance.

• Proven experience supporting audits, statutory accounts, and financial governance.

• Strong budgeting, forecasting, and financial planning experience.

• Advanced financial analysis and reconciliation skills.

• Strong systems knowledge, including experience using Xero.

• Excellent spreadsheet skills, including Google Sheets and/or Excel.

• Able to communicate complex financial information clearly to non-finance stakeholders.

• Comfortable working independently whilst building effective relationships across an organisation.

What’s on Offer?

• Opportunity to shape and strengthen the finance function of a growing impact-focused organisation.

• High level of visibility and engagement with senior leadership.

• Autonomy to improve systems, processes, and financial reporting.

• Flexible part-time working arrangement with hybrid working.

• Opportunity to contribute to meaningful social impact through strong financial stewardship.

• Potential for the role to evolve beyond the initial interim assignment.

CVs will be reviewed on a rolling basis, so if you’re interested in the opportunity, please apply ASAP with your CV in Word format.

At Prospectus, we believe recruitment should be human-led and we are committed to supporting you throughout your application journey. We welcome applicants from all backgrounds and do not discriminate based on age, gender, disability, race, religion, sexual orientation, marital status, or pregnancy/maternity. While AI may be used to support our administrative process, all applications are reviewed by people and all hiring decisions are made by experienced recruiters.