For your COVID-19 Home Test Kit; You will need to post your swab via a priority post box before Midday on the same day that the test is taken. You can identify priority post boxes by accessing the Royal Mail app or website and typing in your postcode.
For your Anti-body test kit; please post it in any Royal Mail post box on the same day that the test is taken.
You should not post your test kit on a Saturday or Sunday. We would also recommend that you do not complete your test on a Saturday or Sunday to avoid a delay in it being received in the lab.