Onside Accounting and Onside Tax donate a share of profit to charities chosen by their employees
Onside Accounting and Tax logo black
Onside Accounting and Tax logo black

Meet the People Behind Onside

We’re a collaborative team of startup-focused accountants, tax specialists and finance experts who partner with ambitious founders through every stage of their growth journey.

From incorporation to running payroll, managing funding rounds, share options, global expansion and exit strategies, our team scales with your business in ways most accountants can’t.

We combine deep technical expertise with a flexible, remote-first approach, delivering advice when you need it from people who genuinely care about your business and its success.

Financial expertise that grows with you every step of the way.

Our Management Team

Martin Brennan

Founder

Ryan Snape

Managing Director,
Onside Tax

Laura Smith

Accounting Partner

Mike Scott

Commercial Director

Jasmeet Chana

Operations Director

Molly Jenkins

Head of Finance and Operations

Linda Lipkova

Head of Accounting

Nicole Third

Head of Tax

Devan Wentworth

Head of US Tax

Sam McMillen

Marketing Manager

Our Accountants

Hannah Gillan

Senior Client Director

Matthew Raby

Client Director

Natasha Wilson

Client Director

Seamus Duffy

Client Director

Sophie Hanks

Client Director

Alisha Parker

Senior Finance Manager

Alisha Patel

Senior Finance Manager

Alex Matthews

Finance Manager

Sam Fawcett

Finance Manager

Samantha Coen

Finance Manager

Shannon Harris

Finance Manager

Sian Falconer

Finance Manager

Stefanie Porter

Finance Manager

Sophie Stansbie

Finance Manager

Mia Qaiser

Finance Manager

Connor Atkins

Senior Finance Associate

Noor Choudhury

Senior Finance Associate

Olivia Harris

Senior Finance Associate

William Grabham

Senior Finance Associate

Abu Alam

Finance Associate

Lyden Masella

Finance Associate

Our Payroll Managers

Donna Greenhalgh

Payroll Manager

John Atherton

Payroll Manager

Our Tax Advisors

Robert Hadden

Personal Tax Manager

Jemma Mason

R&D Tax Associate

Jess Grief

R&D Tax Associate

Luke Gott

R&D Tax Associate

Lygia Bird

US/UK Senior Associate

CFO Services

Imran Chagpar

Head of CFO Services

Kimberley Smith

Fractional Head of Finance

Marcin Tendera

Fractional Finance Manager

People and Talent

Leah Mason-Wilson

Talent Lead
Onside Accounting is a trading name of Onside Accounting Limited which is registered in England & Wales under Company Registration No. 13428300