Frances O 'grady, chief secretary of the UK federation of industry and industry, said: "this suggests that brexit uncertainty has damaged the household budget. Work and living standards must be a priority in determining the best choice for brexit. The government should maintain a single market membership at the negotiating table. " The standard variable interest rate (SVR) is usually adjusted at the base rate, and these standard variable interest rates (SVR) are not fixed or floating transactions. The bank maintained its main interest rate by 0.0 percentage point and raised its 2017 GDP growth forecast by 2 percentage points to 2.4 percentage points. Under the theoretical framework of the theory, the theory of commodity market equilibrium and the monetary market equilibrium of Keynesian theory are unified. Marx's theory of interest rate decisions from the perspective of the source and essence of interest, taking into account the institutional factors in the role of interest rate decisions of interest theory, its theoretical core is the interest rate is determined by the average profit margin. Marx believed that under capitalism, interest is a part of profit and a form of conversion of surplus value.