On 30 September 2022, a majority shareholding in William Duncan + Co, was acquired by Dains Accountants

The Dains Group of Companies currently consists of:

Dains Accountants Limited

Established in 1926, Dains is an independent firm of chartered accountants and business advisers specialising in supporting growing SME businesses.

Core services are Accountancy & Business Services, Audit, Corporate Finance, Forensic Accounting, and Taxation. These services are delivered with a focus on their core values of Valued Relationships, Fairness, Working & Succeeding Together and Integrity.  Together these core values make up the Dains DNA which runs through each of our interactions and activities.


Isosceles Finance Limited

Isosceles Finance supports fast-growing companies with Finance Director, Commercial Accounting and HR solutions. They have worked with some of the most successful technology companies in the UK and helped hundreds of entrepreneurs and founders achieve business growth and, for many, a successful exit.

They have distilled their experiences supporting successful companies into a proven methodology for maximising shareholder value.

Together Isosceles and Dains offer a full-service package of technical and commercial business solutions relevant to the entire lifecycle of their clients. A unique combination for the industry.

Their brands include:

  • iFD Part-time FDs and CFOs
  • ipeopleHR HR and Payroll services
  • icount Cloud-based accounting service to support seed and early-stage tech companies
  • ireport Intelligence insights

Isosceles have 65 staff across three locations: Egham (near Heathrow), Sheffield and Cambridge.

William Duncan + Co Limited

William Duncan Accountants are a West of Scotland-based accountancy firm led by 9 Directors and with a team of over 90 managerial, executive, administrative and IT staff.  Established over 100 years ago, they have an established reputation for working in close partnership with their clients and constant innovation.

The William Duncan team are driven by a passion for using the latest digital accountancy technology to benefit their clients and businesses by driving them forward profitability and tax efficiently whilst maintaining a personalised and tailored service.  Their team of experts work across a range of sectors and industries and develop long-term client relationships by providing advice on how to manage corporate and personal finances in tandem.

Teamwork, clarity and veracity are at the core of everything William Duncan Accountants do, and their business vision statement underlines this with their desire to be “trusted partners in a digital world, passionately creating a sustainable future for all



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