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Finance assistant jobs in Westminster, greater london

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Green Alliance, SW1, London (Hybrid)
£35,002 per year (pro rata)
Posted 1 day ago
Greener and Cleaner, Bromley (Hybrid)
£30,900 per year
Posted 1 day ago Apply Now

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London, Greater London (Hybrid)
SW1, London
Westminster, Greater London
£35,002 per year (pro rata)
Part-time (14 hours per week)
Temporary (to 31 March 2026)

Actively Interviewing

This organisation is scheduling interviews as applications come in. They're ready to hire as soon as they find the right person. Don't miss your opportunity, apply now!

Job description

Green Alliance is an independent think tank and charity focusing on ambitious decisions for the environment. The finance assistant plays an essential role in maintaining control over our finances and operations.  This role will process and monitor financial transactions, liaise with our payroll bureau regarding staff payroll and pensions and support the head of finance.

We are looking for an enthusiastic individual who has a strong financial background with excellent attention to detail, a flexible attitude, an ability to work effectively under their own initiative and as part of a small team, together with excellent organisation and administrative skills.

This is a temporary part-time role for two days a week until the end of March 2026, to start as soon as possible.

Key tasks and responsibilities

To process and monitor financial transactions, perform accounting reconciliations and help ensure that Green Alliance’s finances are accurate and up to date. Duties include the following:

  • Prepare sales invoices and credit notes on our accounting system and email to customer. 
  • Record purchase invoices and credit notes on accounting /system and allocate to correct expenditure and project codes. Obtain approval of invoices in line with our finance handbook.  Prepare fortnightly invoice payment run and enter to banking system for authorisation.
  • Set up new suppliers on accounting system, completing Supplier Information Request forms and undertaking credit checks, where applicable.
  • Processing of staff expenses, ensuring compliance with finance handbook, through to payment on banking system.
  • Import credit card transactions to accounting system and prepare expense sheets for cardholders.  Once credit card expense sheet completed by credit card holder, agree to receipts and process for payment.
  • Process, reconcile and pay monthly payroll run through a bureau.
  • Help to prepare quarterly VAT returns, ensuring compliance with HMRC regulations and the agreed formula for recovery.
  • Prepare monthly bank reconciliations from bank import including allocation of all income and expenses to account codes.

For more information and to apply, please visit our website.

Posted by
Green Alliance View profile Organisation type Registered Charity Company size 21 - 50

Green Alliance is an independent think tank and charity focused on ambitious leadership for the environment.

Posted on: 12 January 2026
Closing date: 26 January 2026 at 14:43
Tags: Administration, Finance, Operations, Accounting

The client requests no contact from agencies or media sales.