For Arrivals (Green and Amber) , Pre-Departure tests and Test to Release 

If you need to cancel your booking please do this by logging into the booking portal and go to 'My bookings', then select the booking you would like to cancel and follow the online instructions. Tests can be cancelled up to 72 hours before the booked appointment. Once within 72 hours of the booked appointment they are unable to be cancelled and non-refundable. Click here for the booking portal: Collinson Testing Centres  

For Pre-Return video test 

The only exception to this is the Pre-Return Video Test which is non-refundable from the point of booking as the test kit is dispatched straight away.