From 6th April, there has been a change to the detail that has to be included on payslips. If you employ personal assistants and the amount of hours they work each week vary, the actual hours worked must be detailed on the payslip. Prior to this change, only the actual wage had to be detailed.
The exception to this is If the hours worked are the same every week and never vary, the hours worked does not need to be detailed on the payslip.
More details can be found at https://www.gov.uk/government/publications/payslip-policy-a-guide-to-the-2019-legislation