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About Us
Who we are
Onside are Chartered Certified Accountants, Business Advisers and Tax Specialists supporting start-up businesses in the UK. We have a passion for supporting start-ups whose accounting needs evolve as they grow.
The company was founded by Martin Brennan, a fellow of the Association of Chartered Certified Accountants (FCCA). Since qualification Martin has spent much of his career working in operational leadership and technical roles in high-growth accounting practices. Martin takes great pride in delivering high standards of work at all times and particularly enjoys developing people, with an excellent track record of converting aspiring young professionals into qualified accountants and tax advisors.
The company was founded by Martin Brennan, a fellow of the Association of Chartered Certified Accountants (FCCA). Since qualification Martin has spent much of his career working in operational leadership and technical roles in high-growth accounting practices. Martin takes great pride in delivering high standards of work at all times and particularly enjoys developing people, with an excellent track record of converting aspiring young professionals into qualified accountants and tax advisors.
Our Team
Our Vision
Onside's vision is simple. We want to be part of your story and we want you to be part of ours. We want our team and our clients to value what we do and more importantly, we want to enjoy it.
Our vision is reflected in our values:
Our vision is reflected in our values:
Dynamic
Our business is fast-moving and adaptable to change
Flexible
Our team can work flexibly, around your needs and ours
Collaborative
We are here to work together to support your business
Personal
We like to know the people we work with and enjoy it!
Growth
We invest a great deal in our people to help them grow
Our Services
Onside offer a vast range of accountancy, tax and other advisory services -
Accounting & Tax
Keeping on top of your filing responsibilities with HMRC and Companies House.
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R&D Tax Credits
Manage your R&D tax credits application with the help of our expert advisors.
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