Frequently Asked Questions

Check most frequently asked questions here, if you still need help then please contact us at

Entering the UK

The field for the reference number in the Passenger Locator Form is format-restricted. It means it must be entered in the format we have sent you in the confirmation email. Please note that the reference number begins with CONFI (with the letter i, not a 1).

We send the reference number needed for your Passenger Locator Form automatically as soon as you complete your purchase. It is sent in a separate email to the order confirmation email. It is sent by an automated system, which can therefore trigger some spam filters (especially for Hotmail or BTinternet accounts). Please make sure you have checked your spam folder. 

If you still cannot find your reference number, there is an easy way to retrieve it.

Go to and click on Lookup Passenger Locator Number. Enter the information you entered on your order. The system will then email you your locator number again.

Yes, Confirm Testing is proud to be listed on the UK Government website to provide Testing for International Arrivals (Day 2 and Day 8) as well as Test to Release and general testing within the community.

You can find us on the following lists on the UK Government website:

  1. General testing providers
  2. Day 2 Day 8 testing providers: Click here for Amber list and here for Green list.
  3. Test to Release 

Yes. You can read the full Statutory Instrument here.

You cannot leave Home Quarantine until you have served 10 (ten) full days and you have received evidence of a negative test result for your Day 8 test. 

Before you travel to England you must:

1. take a COVID-19 test – you must take the test in the 2 days before you travel to England

book a quarantine hotel package, including 2 COVID-19 tests

2. complete a passenger locator form

3. You must do this even if you are fully vaccinated.

You can view the red list of countries on the Government website here. 

As a vaccinated traveller, you must take a test on or before Day 2 of your arrival into the UK. This can be either a Lateral Flow Test or a PCR test.

You must book the Day 2 test before travelling back to England, as you will need to include the booking reference number on your Passenger Locator Form.

The full Government guidance on international arrivals testing can be found here. 

**Information for under 18s:**

- Children aged 4 and under do not have to take any COVID-19 travel tests.

- Children aged 5 to 17 have to follow the testing and quarantine rules for people who qualify as fully vaccinated on arrival in England. This means that they have to take a COVID-19 test after they arrive in England – before the end of day 2 at the latest.

All the government’s current advice on Home Quarantine can be found here.

Pre-arrival to the UK

Pre-arrival in the UK, you must take a COVID-19 test before you start your journey to the UK. This can be either a PCR test or an Antigen test and you must take the test in the 3 days before the service on which you will arrive in the UK departs. You can buy and take this test in the country you're travelling to UK from, OR, you can also purchase a Pre-departure Antigen test from a private provider in the UK and take it abroad with you then perform the test while abroad and within 3 days prior to arrival in the UK. 

After arrival

Day 2 & 8 PCR Tests

You must take these tests **on or before** day 2 of your quarantine period *and* **on or after** day 8, and you must quarantine at home or in the place you are staying for 10 days after the day of your arrival in the UK.

You must book these tests before travelling back to the UK, as you will need to include the booking reference numbers on your Passenger Locator Form.

Test to Release PCR Test

Take an optional Test to Release PCR test on day 5 after your arrival and you can end your quarantine upon receiving your negative result.

The scheme is voluntary and only applies to those quarantining in England.

*Day of arrival is considered Day 0.

Test to Release

Yes, Confirm Testing is proud to be recognised by the UK Government (the Department of Health and Social Care) to provide Test to Release as well as Testing for International Arrivals (Day 2 and Day8) and general testing within the community.

You can find us on the following lists on the UK Government website:

  1. General testing providers
  2. Day 2 Day 8 testing providers: Click here for Amber list and here for Green list.
  3. Test to Release


Yes, children of all ages are required to do Test to Release if they want to leave quarantine early. 

The Government guidance on this is found on this page and it says :

"You will have to pay the private test provider for your test. You will need to book an individual test for each person opting into Test to Release, including children of all ages."

Yes. You can read the full Statutory Instrument here.


Due to different mailing collection times on the weekend, we do not recommend that you take this test if your day 5 falls on a Saturday or Sunday. This can delay the arrival of your swab at the lab and you may not receive your results until day 8.

You can still choose to perform the home test if you arrange for a private courier to deliver the sample to the lab on that day.

Test to Release is a scheme that allows travellers to leave home quarantine early by performing a test on or after Day 5 of their self-isolation. If the test result is negative, they can leave home quarantine. Please note, you can only leave after you have received the result, and if you have purchased the home test, your result would come on Day 6 at the earliest.

Under the current rules, this is the only way that home quarantine can be brought to an end before the 10 day self-isolation period

The scheme is voluntary and applies to those quarantining in England only.

If you do not want to opt into the Test to Release scheme, you will need to self-isolate for 10 days.

You can purchase the Test to Release Day 5 test here.  

Fit to Fly

Most do but this is constantly changing. The guidelines and different types of tests required is constantly being re-evaluated by countries so we have chosen not to list them here as it is best to search for the updated information at the time you need it. We are always happy to answer questions if you choose to contact us.

Our in-person service at the Heathrow Marriott is open seven days per week. Our laboratory processes swab samples 24/7.

The biggest risk with Fit to Fly certificates is that someone misses a flight because they do the test incorrectly or there is a delay in getting the swab to the laboratory (usually caused by postal delays).

So, we ONLY offer Fit to Fly as an in-person service at our clinic at the Heathrow Marriott Hotel.

The swabbing is undertaken by a trained professional to minimise the risk of errors.

The swabs are sent by motorcycle courier to the laboratory to minimise the risk of delivery problems.

Some countries accept rapid antigen tests (also called Lateral Flow Tests) for Fit to Fly purposes. However, this list changes all the time so we have decided not to publish a list as we do not want to give information that is incorrect or out of date.

It is your responsibility to make sure you are buying the right test for whichever country you are visiting. We are always happy to answer questions should you choose to contact us.

Yes, you will be provided with an official QR-coded certificate with your results. This certificate contains the type of test performed, the name of the laboratory (if an LFT, this will be Confirm Testing, which is UKAS-accredited) that conducted the test, as well as the signature of the lead scientist (if a PCR test).

We can only issue a certificate if you have been found to have a NEGATIVE test result. If your result is positive, you will have to follow NHS guidelines and self-isolate immediately. For the health of everyone around you, you must not attempt to travel.

You will receive a document of your positive result.

Fit to Fly is the general description for a test that allows you to demonstrate that you are free of COVID-19 and are fit to board a plane enter another country.

Most countries ask for a certificate that shows a negative PCR result that was performed within 72 hours of the flight leaving.

Most countries ask for 72 hours from the time the swab is taken to the flight departure time or arrival in the country. Some ask for 48 hours.

We advise people to come to the clinic TWO DAYS before they are due to fly. This gives us time to do the test and get the results back from the laboratory; but to still be within the 72 hour requirement for most countries.

For example, if you are due to fly on a Saturday, come to the clinic to get tested on Thursday. You’ll get your results on Friday - in plenty of time for the flight the next day

Barcodes & Results

Don’t worry, if you have forgotten to register your barcode before posting, simply register it online at Ensure you type in the correct details including your home test barcode (you can find this number on the instructions booklet that came in with the test or in the box the test came in) so the lab will be able to link your home test kit with your profile.

If you are having trouble registering your barcode you can always give our friendly Customer Service Team a call on 020 3870 3623 and we can register it for you.

Please note that it can take up to 48 hours after your home test arrives at the lab for the results to be released. You can check the status of your returned home test with the tracking number in the returns label you used to post it and using the Royal Mail tracking service via the link below.


Before posting your home test, you also need to register your home test on our portal so the lab can link it to the record we have on file for you. To register your home test, please visit Ensure you type in the correct details including your home test barcode (you can find this number in the leaflet that came in with the test or in the box the test came in) so the lab will be able to link your home test kit with your profile.

Lateral Flow Tests - Fit to Fly

Yes, you can use the Lateral Flow Fit to Fly tests to leave the UK to a destination that accepts rapid antigen/lateral flow tests as proof of COVID-19 negative status for entry.

It is up to you to verify the requirements needed for entry into your destination. You can find advice here

Yes, you can take this test kit with you to your holiday destination to take while there before your flight back to the UK. 

The tests are MHRA approved for self-testing and are CE marked.

Yes, we have QR codes on our Lateral Flow Test Fit to Fly certificates.

We verify results photos throughout the day, seven days a week, and generally send out result certificates within hours of photos being uploaded.

However, please be aware that it can occasionally take longer to send out certificates (up 12 hours), particularly if photos are uploaded at night.

If you haven't received your certificate within 12 hours please check your "spam"/"junk" mailbox before contacting us.

When you send your photo, you will receive an auto-response confirming receipt of the email. If you have not received this, then we have not received your email, please resend it.

PCR Testing

Please do not eat, drink or chew gum for at least 30 minutes prior to your PCR or rapid antigen test.

Please do not smoke for at least 30 minutes prior to your PCR or rapid antigen test.

Please do not apply any nasal drops for at least 30 minutes prior to your PCR or rapid antigen test.

PCR testing is recognised as the "gold standard" of laboratory testing with accuracy rates very close to 100% if the sampling is performed properly. Anyone not doing the test properly should receive an "invalid" response, rather than negative, which would give false information.

Yes, the test is suitable for people of any age. We use the most non-invasive kit available, but some children may still find the process uncomfortable. If the test is being undertaken at home, to avoid receiving an INVALID result, we recommend that parents perform the test on young children, wherever possible.

This is a notifiable disease so all results will be shared with Public Health England. In the event of a positive result, we will provide advice and support on what to do next.

According to NHS advice, if you are getting a test because you have symptoms, you and anyone you live with MUST stay at home until you get your result. Anyone in your support bubble must also self-isolate until you get your result.

We apply enhanced levels of data protection to the collection, storage and processing of all medical data related to COVID-19. This is in accordance with the requirements of the Information Commissioner's Office.

PCR (polymerase chain reaction) testing looks for evidence that the Sars-CoV-2 virus is currently in your body, by detecting the presence of its genetic material (called “RNA”) in a swab sample from your nose/throat.

When the sample is analysed in a laboratory, a reagent is added to it which – if the virus is present – starts a “chain reaction” and creates copies of the genetic material contained within the virus so that it can be detected and analysed.

The analysis takes place on complex laboratory equipment and can take many hours to return a result. The swab can be taken at home, the testing cannot.

Anyone can do a test for Covid-19, especially if they have recently travelled, or have been in contact with someone that has tested positive.

Asymptomatic carriers of the virus have an active infection but do not display any symptoms, so testing can help determine your status regardless of whether you are displaying symptoms or not.

Some people are required by law to be tested - for example, in relation to international travel - so we always recommend that people keep themselves fully up to date with the requirements.

Returns & Refunds

Before claiming or discussing a refund, please read our full policy here.


About Confirm Testing

Confirm Testing Limited is registered in England with number 12570252.

The registered address is:

Clifton House

Bunnian Place



RG21 7JE

Our operational address is 1 Harley Street, London W1G 9QD

Written correspondence should be sent to the above address.

Email correspondence can be sent to

All medical products used by Confirm Testing are registered with the MHRA and are CE approved.

The laboratories we use are fully accredited.

Confirm Testing is also a UKAS-accredited lab, our schedule of accreditation can be found here.  

Not only are the laboratories we use UKAS-accredited, but we are also UKAS-accredited to ISO 15189:2021 and 22870 standards. Our accreditation can be accessed on the UKAS website here. 

You can find our privacy policy here.