You can at all of our testing locations except London City Airport where you will be asked to provide evidence of your travel booking which will be cross referenced with your passport. All other locations do not require this.
If you are travelling on a date in the near future, and have been unable to book a test on your day of departure, you may be permitted to undertake a test prior to arrival at the airport. You need to check the test still satisfies the time validity period of your destination country. Regulations and restrictions are changing rapidly so please check your airline website or destination government website for the latest up to date requirements. For more information please click here: https://www.gov.uk/foreign-travel-advice