Commercial properties are usually not cheap. However, an investor can take out a mortgage at a relatively low rate of 3.5%.
More than 90% of purchases in the UK are mortgaged. British banks can give foreign investors 80-90% loan-to-value mortgages on repayment terms of 30-40 years. The bigger the deposit, the lower the mortgage rate can be.
A 25-40% deposit and confirmed credit rating will guarantee that a British bank will issue a loan to you.