Mr Horsley is a Member of the New Zealand Order of Merit, a Life Fellow of the New Zealand Institute of Valuers (NZIV) now the Property Institute of New Zealand, an Eminent Fellow of the Royal Institution of Chartered Surveyors and a Chartered Fellow of the Institute of Directors.

Mr Horsley was for 12 years the NZIV representative on the International Valuation Standards Committee and chair of the Committee between 1989 and 1993. In 2006 he was appointed a panel member of the Local Government Rates Inquiry; a ministerial inquiry setup to investigate the cost drivers and funding of local authority rating. In 2007 he was appointed an additional member of the High Court.

30+ years experience in plant and machinery valuation. Key Areas of Effectiveness: - Insurance - Financial Reporting - Financial Security - Tax (Cost Allocation and Depreciation Recovery) - Building Componentisation - Insolvency - Family Law - Fixed asset registers - Mergers, Acquisitions & Disposal Achievements: - 1994 Gained full membership with the NZ Institute of Plant and Machinery Valuers. - 2000 Registered Senior Plant and Machinery Valuer Property Institute of NZ (PINZ) - 2000 Registered Member of the NZ Institute of Valuers - 2014 Associate of the Australian Property Institute (CPV - Plant & Machinery) Valuations completed in primary production, institutional, industrial and commercial sectors including: Abattoirs, Airlines, Airport and Air Traffic Control, Agriculture, Automotive, Concrete, Dairy, Education, Foundry and Casting, Flour Mills, Fisheries, Fertiliser, Food Manufacturing, Hotels & Resorts, Health and Aged Care, Infrastructure, Multimedia Transmission, Newspaper & Publishing, Printing, Plastics, Postal Services, Rice Mills, Rolling Stock, Sugar Mills, Textiles and Transport. Assignments completed for both small business and large national and international portfolios throughout Australia, New Zealand, South Pacific and the Middle East.