Yes, based on the information we have now, everyone entering the UK has to fill out an online Public Health Passenger Locator Form. Although this is subject to change, so please check our travel requirements page 14 days before you travel.
You can’t complete the form until 48 hours before your arrival time in the UK, so you’ll need to fill this in while you’re away. When you arrive back in the UK, you’ll have to show your completed form at the border, either by printing a copy or showing it on your phone.
Each passenger in your party needs to complete a form, except for children under 18 years old whose details can be added to the form of an adult they’re travelling with. You can find out more information and fill out the form here.