On 12 October 2007, the FRC Market Participants Group published its report into choice in the UK Audit Market. The report contains 15 recommendations intended to increase investment in audit services by non big four firms, improve market understanding and accountability at board level, increase choice from within the big four and reduce the risk of a big four firm leaving the market. It also published its update, Choice in the Audit Market, which summarises how the recommendations will be implemented. These include possible changes to audit firm ownership rules, and guidance to both firms and companies. The FRC will make a public report every six months on implementing the arrangements