This paper aimed to help researchers and international companies to the differences and similarities between IFRS (International financial reporting standards) and UK GAAP or UK accounting principles, and to the accounting changes between standard setting of the International Accounting Standards Board and the Accounting Standards Board in United Kingdom. We will use in this study statistical methods to calculate similarities and difference frequencies between the UK standards and IFRS standards, according to the PricewaterhouseCoopers report in 2005. We will use the one simple test to confirm or refuse our hypothesis. In conclusion, we found that the gap between UK GAAP and IFRS is small.
 D. R. Carmichael, O. Ray Whittington, Lynford Graham, Accountants handbook, volume one, eleventh edition, financial accounting and general topics, john Wiley & sons, inc., Hoboken, new jersey, Canada, 2007, p:109.
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 Helen McCann, PwC inform IFRS/UK main differences indicators, The Accounting Technical Department of PricewaterhouseCoopers, Chartered Accountants, June 2005, pp.3-4.
 SPSS outputs, Statistical Package for the Social Sciences, the result of T test.
 http://www.accountingweb.co.uk/business/financial-reporting/uk-gaap-and-ias-comparison, accessed on 24/04/2017.