On 3 January 2016, French Limited purchased 15,000 debentures (having face value of £ 10 each) issued by Greek Limited. Debentures were purchased at £ 9.7 each. However, the fair value of each debenture as on the date of purchase was £ 96 in the quoted market.

Transaction cost of £ 350 was also incurred on purchase of debentures. Coupon rate is 12% which is payable annually on 31 December whereas the effective interest rate is 12.6%.

French Limited classified the investment in debentures as financial asset at amortised cost. At initial recognition, French Limited determined that debenture was not credit impaired.

On 31 December 2017, French Limited determined that there had been a significant increase in credit risk since the acquisition of the debentures.

On 31 December 2018, French Limited determined that the debenture was credit impaired.

French Limited's estimates of expected credit losses in respect of the investment in debentures at different dates are given below:

Date Life Time 12 months
3 January 2016 £ 54,500 £ 11,200
31 December 2016 £ 54,500 £ 11,200
31 December 2017 £ 62,600 £ 12,400
31 December 2018 £ 70,900 £ 14,500
31 December 2019 £ 70,900 £ 14,500

Annual interest has been received on time each year.

Required:
Prepare journal entries in the books of French Limited in respect of the above for the years ended 31 December 2016 to 31 December 2019.