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Returning your test

Please note, our laboratories and services will be closed from 24th December to 2nd January 2023.

Before returning any PCR sample to us, please ensure you have registered your swab barcode on our portal using the instructions enclosed with your kit.

Your swab barcode can be found on the sample tube and begins with 50000.

If you do not have login details for the portal, go to portal.circular1.com and click forgot password.

You will receive an email to access the portal.

If you need assistance, please use our webchat, call 0800 7999 751 or email [email protected] International callers, phone: +441556510576

Please note you do not have to return your Travel Lateral flow test. You use it at home and then submit a photograph of your test on our online portal using the instructions provided in the kit.


INDUSTRIAL ACTION 24th & 25th November – you could experience delays

If you are posting back via our Royal Mail pre-paid box, please ensure you seal the contents in the box securely and make a note of your Royal Mail tracking number from the front of the box.

Post your sample in one of over 35,000 specially selected Royal Mail priority post boxes you can find by clicking here. (Services near you | Royal Mail Group Ltd)

We recommend posting before 12pm for first collections. All our PCR test kits are issued with pre-paid First Class postage, which means if you return your swab sample by post in the morning, we should receive it in our lab the following day. The samples are delivered by Royal Mail to our Manchester lab usually around 12pm. Please note that Royal Mail services do not operate during weekends and bank holidays so if you return your swab then, your test kit will be received by us the next working day. If you post your sample on Friday, Saturday or Sunday, your sample may not arrive at the lab until the following Tuesday or Wednesday.

Your UKAS certified results certificate will be emailed subsequent to your swab being processed at our laboratory (certificate also available for download from our online portal). Due to unprecedented demand created by the Governments changes we are doing our utmost to process your swabs accurately and in a timely manner, thank you for your patience.


You can arrange your own courier (at your own cost) to one of our laboratories.

If you would like to receive a quote from our logistics team, please email [email protected]  with your full name, post code and when you need your sample to be collected.

Click & Collect

Circular1 Health services run 365 days a year. To ensure a better turnaround time, if you would prefer not to use Royal Mail, we offer Click & Collect at the following locations:


Circular1 Health Laboratory,
Waterfront Business Park,
Harding Rise,
Barrow-In-Furness, LA14 2TF

Open 8am-6pm – 7 days a week
Drop Box Available 24/7 – 7 days a week
Click & Collect and PCR Drop-Off

Note: Fast Track Drop-Off is unavailable at this location

Get directions to this location


Circular1 Health Laboratory,
Egerton House (South),
The Towers Business Park,
Wilmslow Rd, Didsbury,
Manchester, M20 2DX

Open 8am-6pm – Monday to Saturday, CLOSED Sunday – LAST Drop 3pm Saturday
Drop Box available between 8am-10pm – 7 days a week
Click & Collect and PCR Drop-Off

Get directions to this location

Note: Please see this poster for more information on where to find us


Me and My Health HUB,
Unit 56, Grand Terrace
St Pancras International Station
Euston Road
London, N1C 4QP

PCR Drop-Off
7 days a week:
Monday – Saturday 7am – 9pm,
Sunday 9am – 7pm

Note: Fast Track Drop-Off is unavailable at this location

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Test Drop Off

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