Three-quarters of business owners think the rules of doing business have altered dramatically in the past year, according to new research, with increased competitor activity, more data-driven decision-making and the struggle to keep up with regulatory changes being key changes. The survey of 1,003 SME owners by accountancy firm, Menzies LLP, shows that 88% of business owners think their biggest challenge in the year ahead is “unpredictable market demand”. Brexit and other uncertainties also mean more turbulent times are predicted. The higher the business turnover, the more likely respondents were to agree that the rules of doing business had changed—91% of businesses with a turnover between £1m and £10m, and 93% of those with