It seems that most or all Covid-19 RT-PCR testing locations only supply a digital copy of the test results? Is it OK to show the digital copy of the results on check-in for a UK flight  or must a printed copy be available?

I would print out the digital copy.

Do you mean a......

- SMS message which states Negative

- E-mail notification

- E-mailed lab report 

- PDF or JPG certificate

 

I would suggest that anything which states the following should be ok and you can print it out. 

- Full Name

- Test Date

- Type of Test: Covid-19 RT PCR 

- Result of Test

16 hours ago, JamesH said:

It seems that most or all Covid-19 RT-PCR testing locations only supply a digital copy of the test results?

 

That's not true.  Most or probably all hospitals will provide you with an official copy with the hospital stamp on it if you need it.  

 

Check with your airline what is actually required.  It all varies by your airline and destination country.

6 hours ago, richard_smith237 said:

I would suggest that anything which states the following should be ok and you can print it out. 

- Full Name

- Test Date

- Type of Test: Covid-19 RT PCR 

- Result of Test

 

Definitely also should have your passport number and date of birth.

This is from the UK Gov Website:

 

How to provide proof of a negative test result

Your test result can be provided as:

a printed document

an email or text message you can show on your phone - make sure your device is charged

 

https://www.gov.uk/guidance/coronavirus-covid-19-testing-for-people-travelling-to-england