The following information was prepared by a trainee accountant for Maestro Co for Year 12. Examination of the underlying records revealed the following errors. 1. Salaries owed of ​£ at the year end had not been taken into account. 2. Insurance prepaid at the year end of ​£ had been treated as an accrual. 3. Sales revenue included the sales proceeds from the disposal of a delivery van of ​£ ​(which was also the residual value of the​ van). What is the operating profit for the​ year?