On 1 May 2019, a company which prepares financial statements to 30 April each year issues £750,000 of 3% loan stock at a discount of 5%. Issue costs are £13,175. Interest is payable on 30 April each year and the stock is redeemable on 30 April 2023 at a premium of 10%. The effective rate of interest is 7.25% per annum.

(a) State the amount at which the loan stock should be measured on 1 May 2019.

(b) Calculate the amount at which the loan stock should be shown in the company's statement of financial position on 30 April 2020, 2021, 2022 and 2023.