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Accounting Firm

Carbon Accountancy

Chartered accountants in London, Reading and Dublin handling audits, company accounts and business tax

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About Carbon Accountancy

Carbon Accountancy is a chartered accountancy firm with its main office in London EC1 and further offices in Reading and Dublin. It serves start-ups, growing SMEs and international corporations across the UK and beyond, and its founder and CEO, John Leyden, speaks with every client personally.

What Carbon Accountancy offers

  • Company accounts — year-end accounts for limited companies from start-ups to long-established firms.
  • Business audits — statutory and internal audits for businesses required to have one by law, lenders or shareholders.
  • UK subsidiaries and groups — handling UK financial obligations for listed companies and overseas groups.
  • Business tax — corporate tax advice, including R&D tax credit claims to HMRC.
  • Bookkeeping — routine record keeping for small and mid-sized firms.
  • Specialist services — EMI share schemes, business valuations, corporate finance, and probate and estate work.

Who it works with

Clients range from fast-moving start-ups and SMEs to listed companies and UK arms of international groups, across many sectors.

Key facts

  • Offices: London, Reading and Dublin
  • Founder and CEO: John Leyden
  • Audit registration: Institute of Chartered Accountants in Ireland, for the UK and Ireland
  • Fees: fixed rather than hourly

Profile written by TrustList from the business's own published information, Sep 2026.

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Rankings

As of 2026-10-05. Organic ranks only; sponsored placements are never ranks.

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