Jobs Companies Reform UK Junior Finance Assistant

About this Junior Finance Assistant role at Reform UK

Reform UK · Onsite · Westminster, England, United Kingdom

This is a hands‑on junior finance role ideal for someone at the early stages of their AAT qualification (Level 1–3), with the ambition to progress to ACCA. The role sits within a small, SME‑style finance team, supporting day‑to‑day accounting operations, month‑end routines, and system administration. The business currently uses Xero, with a planned transition to Microsoft Dynamics 365 Business Central in the next 12 months, so the role suits someone comfortable with cloud systems and process change.

Key Responsibilities

Daily & Weekly Operations

  • Process supplier invoices, ensuring correct coding, approvals, and supporting documentation.
  • Prepare and post bank transactions; assist with daily bank reconciliation.
  • Manage accounts payable inbox and supplier queries.
  • Assist with accounts receivable tasks: raising invoices, allocating receipts, and chasing overdue balances.
  • Maintain accurate records for expenses, credit cards, and staff reimbursements using Navan.
  • Keep digital filing organised and up to date.

Month‑End & Reporting Support

  • Prepare prepayments and accruals schedules under guidance.
  • Support balance sheet reconciliations (bank, control accounts, fixed assets, AP/AR).
  • Assist with posting journals and maintaining the general ledger.
  • Run standard month‑end reports from Xero and assist with variance analysis.

Systems & Process

  • Operate confidently within Xero, including tracking categories, bank rules, and basic reporting.
  • Support the finance team during the migration to Dynamics 365, including data cleansing, testing, and user acceptance tasks.
  • Help document finance processes and maintain internal controls.

Compliance & Administration

  • Assist with VAT return preparation and supporting schedules.
  • Support ad‑hoc finance projects, audits, and operational improvements.
  • Maintain organised digital filing in SharePoint/OneDrive.

Skills & Attributes

  • Strong attention to detail and accuracy.
  • Comfortable working in a fast‑moving SME environment.
  • Good communication skills for supplier and internal queries.
  • Proactive, organised, and willing to learn.
  • Confident with cloud‑based systems and spreadsheets (Excel/Sheets).

Qualifications & Experience

Essential:
Studying AAT Level 1, 2 or 3.
Basic understanding of double‑entry bookkeeping.
Competent with Excel (lookups, pivot tables, basic formulas).

Desirable:
Exposure to Xero, Navan, or other cloud accounting software.
Interest in progressing to ACCA.
Experience in an SME or multi‑entity environment.
Development & Progression
Full support for AAT progression and later ACCA (subject to performance).
Exposure to month‑end, budgeting, and system migration projects.
Clear pathway to Assistant Accountant within 18–24 months.

This is a fantastic opportunity for a motivated and career-driven individual to begin their journey in finance with a forward-thinking organisation. With exciting growth plans ahead, there has never been a better time to join and be part of the Party's success story.

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About Reform UK

Reform UK is rewriting British politics.

With over 271,000 members and over 100 consecutive opinion poll leads, averaging 31%, we are the opposition party for millions who want to build a stronger, freer, better Britain.

We have all the momentum: 

8 MPs in Westminster
2 Mayors
2 Member of the Senedd 
1 Member of the Scottish Parliament
900+ councillors – and counting, with new victories every week

Our success is accelerating and we are taking the next step. 

To keep up with the scale of change we’re driving, we are expanding our team of exceptional people.

If you want to work at the heart of Britain’s fastest-growing political force and help to transform the country, this is your moment to join us.

Please see open roles below.

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