In 1993, John Mayhew founded HET Software to develop software solutions for the social care sector in the UK and later, Australia, providing technical support from Malaysia. The company became a 'best of breed' with over 600 clients and a reputation for product innovation.
He sold the company in August 2012, remaining one of four Executive Directors. The combined business had revenues of £10 million per annum, and continued to operate in the UK, Australia and Malaysia employing 100 staff.
By the time of his retirement in early 2014 John had built up three pro-bono directorships, later reducing these to two.
John is a Director of the Haverhill Chamber of Commerce and is currently heavily involved in a campaign to improve the A1307 road link towards Cambridge.
He is also a Director of ONE Haverhill, originally a Government backed pilot, but now fully fledged and providing a forum for major stakeholders in the area (Town Council, Borough Council, County Council, Police, NHS, Education, Housing, voluntary sector and Business) to collaborate on community projects. He sat for 15 months on the small working party charged with managing the Statutory Master Plan process for the regeneration of Haverhill Town Centre, which was approved by St Edmundsbury Borough Council in September 2015. He remains involved in the management of the Master Plan delivery process.
On retirement, John wanted to create a balance between his pro-bono and commercial interests and in 2014, used his experience of gaining and maintaining Research & Development Tax Credits for his own business to back the creation of Fiscale as specialist tax advisors. Together with his business partner, Stephen Bunting, he has built the business up to 10 employees and has helped clients to recover over £3 million of Corporation Tax.