Book a COVID-19 PCR Test For International Travel/ Book a COVID-19 PCR Test to Reduce Post-Travel Quarantine . ExpressTest is a UK Government approved private COVID-19 testing service providing fast, accurate and reliable PCR screening across the UK. International travellers can obtain a Fit to Fly certificate for £80 per person. Customers can book a PCR test via the ExpressTest website for one of our drive-through or walk-in Covid testing centres. On the day of their booking, customers should travel to the test centre where their sample will be taken by one of our clinically trained team members.