Two directors at one of the UK’s largest distributors of medical products to the primary care market plan to double its turnover after buying the business.

Williams Medical Supplies’ (WMS) chief executive Vince Kerr has bought the company after 14 years service. He was joined in the deal by commercial director Nigel Knight.

The financial terms of the deal have not been disclosed, but Kerr and Knight were backed with £10.5 million provided by ISIS Equity Partners. This was supported with debt authorised by National Australia Bank.

ISIS’ investment, which was managed by Mark Advani, is the first from its ISIS IV fund. WMS joins ISIS’ portfolio of healthcare companies such as Care Management Group and Paragon (UK).

The business was sold by Robin Williams, who retires 21 years after establishing the company. He remains with WMS for six months as a consultant.

WMS, which is based in Rhymney, South Wales, supplies a range of medial products such as pharmaceuticals, consumables and medical equipment as well as providing support and practice management services.

It has more than 11,000 clients, which are predominantly GPs but also include pharmacies, the NHS, occupational health professionals, nursing homes, family planning centres and prisons.

In the 12 months to the end of July last year, the company reported a £1.3 million profit after tax from a £41.3 million turnover.