Ken starts trading on 1 October 2017 and chooses 30 April as his accounting date. He ceases trading on 31 January 2023 and has adjusted trading profits as follows:

£

7 months to 30 April 2018 3,500 year to 30 April 2019 18,480 year to 30 April 2020 17,700 year to 30 April 2021 27,900 year to 30 April 2022 28,200 9 months to 31 January 2023 17,300 Compute Ken's trading income for all tax years.