Sick Note for Flu
Get documented for flu or viral illness, accepted by UK employers. Issued by a UK GP without leaving home.
When you have flu, the last thing you need is a GP waiting room. Get a signed sick note. No appointment needed.
✔ Covers flu, viral illness, respiratory infections and related symptoms.
✔ Accepted by UK employers for work absence documentation.
✔ Most Same day or by 9AM next morning. From £47.
✔ Full refund if we can't issue one.
GET MY SICK NOTE 
All consultations subject to clinical assessment. Issued only where clinically appropriate.
Ready to return? You may also need a fit to work certificate before your employer allows you back.
Get your medical certificate delivered straight to your inbox from £37
How It Works
Complete a short online questionnaire
No appointment required. Complete a short medical questionnaire and upload any supporting evidence.
Doctor reviews your evidence
A GMC-registered doctor reviews your submission individually. No automated approvals.
✔ Full refund if the GP cannot issue.
Receive your certificate
Certificates arrive most same day, all by 9AM next morning, delivered as a signed PDF direct to your inbox.
Very happy, I ordered my Medical Certificate in the early morning hours and before noon time of same day I had it on my inbox. Speedy service and they present the health condition precisely, get to the point.
They meet the incredibly fast turnaround stated (certificate/letter sent before 9am the following morning if the doctor feels that a letter/certificate is appropriate) which is incredibly quick and I am really grateful for the help provided!
Very easy and quick to get my certificate. And the certificate was approved from the specific company to travel with my dog. I will use them again. Well done.
Second time using this company and they are fabulous! Always great, fast, friendly service. Highly recommend!
This was my second time using Medical Cert, and once again the service was exceptionally quick and professional. Everything was handled efficiently, with clear communication throughout.
I found the service very straight forward and quick. Exactly what I needed to get my Padi medical form signed before our holiday. Thank you very much.
Process was easy and responses were quick. I would recommend their service.
Fast efficient service for medical certificates. I used the not fit to fly service and was provided with a certificate the next day, the price is very reasonable and enabled a flight credit refund with my airline. Would recommend and would use again if needed.
A fast and efficient service. It wasn't complicated and the Fit-to-fly note was accepted by the Airport without any further questions. Thank you.
Ideal for me, I am looking to get a certificate for some medical issues I have. So this is the perfect solution for me, uploading docs was easy and the forms very straightforward to fill in. Will definitely use them again. Many thanks.
Excellent service. Easy to use and certificate issued in less than 24 hours. £39 as opposed to the £150 my GP charges. Highly recommended.
Quick and reasonably pain-free. Received their standard certificate as well as my requested bespoke certificate, by email, by 9am the following morning. Both completed properly, signed and stamped as required. More expensive than my GP, but infinitely quicker and easier.
One of the best experiences. It's easy to get a GP note.
Excellent. My GP refuses to issue DWP MED 3 Fit Notes to students. MedicalCert were excellent and extremely helpful in providing a necessary certificate. Highly recommended.
You were amazing, you kept me updated and replied promptly to any queries I had. I thank you from the bottom of my heart.
They helped me, they were very professional and nice.
Very pleased. Quick service with very professional letter provided.
Great service, pretty straight forward and easy to use the website.
I was recommended Medical Cert by a friend and was so impressed with the service received. I would recommend using a laptop rather than a phone. Overall a fantastic and fast service.
Sick Note for Flu — Can You Get One?
Flu — proper influenza, not just a cold — can leave you completely unable to work for a week or more. If you are off for more than seven days, your employer will ask for a sick note. Yes, you can get one for flu, and yes, you can get it online without leaving the house.
Yes — flu is a valid medical reason for a sick note
Influenza is a clinically recognised illness. A GMC-registered doctor can certify a flu-related absence on a fit note in exactly the same way as any other illness. There is nothing unusual about requesting a sick note for flu — it is one of the most common reasons for extended workplace absence in the UK each winter.
MedicalCert issues flu sick notes same day, online, through GMC-registered UK doctors. No appointment, no waiting room, no need to leave the house when you are unwell.
When Do You Need a Sick Note for Flu?
The rules are the same for flu as for any other illness. Most employees do not need a sick note for a short flu absence — but do once it extends beyond seven calendar days.
Days 1–7 — self-certify
For the first seven calendar days of any absence, including flu, you can self-certify. Tell your employer you are unwell — no doctor’s note required. Most standard flu runs its course within this window.
Day 8 onwards — sick note required
If you are still unwell on day eight, your employer can request a fit note from a GMC-registered doctor. This is where MedicalCert comes in — you can get your flu sick note the same day, online, without a GP appointment.
Under 7 days — some employers request it anyway
Some employers have their own absence policies that require documentation for any absence, regardless of duration. If your employer has requested a sick note for a short flu absence, a private certificate from MedicalCert satisfies this requirement.
Flu vs cold — does it matter for a sick note?
From an employment and sick note perspective, no — both are valid reasons for certified absence if they make you unfit for work. Flu typically involves a sudden high temperature, aching muscles, exhaustion, headache, and a dry cough. A cold is usually milder and less debilitating. If you genuinely cannot work due to flu symptoms, a doctor can certify that incapacity regardless of whether it is clinically classified as influenza or a severe upper respiratory infection.
What Does a Flu Sick Note Include?
Certificate contents
- ✔Your full name, date of birth, and contact details
- ✔Diagnosis or clinical description — typically “influenza,” “upper respiratory tract infection,” or “viral illness”
- ✔Certified period of absence — start and end date
- ✔“Not fit for work” assessment for the certified period
- ✔GMC registration number of the signing doctor
- ✔Unique QR code for employer verification
Sick Pay for Flu — What You Are Entitled To
From 6 April 2026, the Employment Rights Act 2025 changed SSP significantly. The three-day waiting period has been abolished — SSP is now payable from the first day of certified absence, at £123.25 per week or 80% of average weekly earnings, whichever is lower. The lower earnings limit has also been removed, meaning all employees qualify regardless of income.
Previously, employees had to be off for four consecutive days before SSP applied. For a flu absence that begins and ends within the old three-day window, SSP was not payable at all. From April 2026, even a single day of certified flu absence triggers SSP entitlement.
Your employer may also offer enhanced contractual sick pay above SSP — check your employment contract. SSP is the statutory minimum.
How to Get a Flu Sick Note Online — Same Day
When you have flu, the last thing you want is to sit in a GP waiting room or spend days trying to get an appointment. MedicalCert is fully online.
Complete the online consultation
Describe your symptoms, when they started, and how they are affecting your ability to work. For flu this typically includes high temperature, aching muscles, fatigue, headache, and respiratory symptoms. You do not need a positive test result — clinical assessment of your symptoms is sufficient.
GMC-registered doctor reviews your case
One of our GPs reviews your submission the same day and assesses whether the clinical picture supports issuing a fit note. If a certificate cannot be supported, you receive a full refund.
Certificate delivered to your inbox
Your signed certificate arrives same day (submit before 9pm) or by 9am the following morning. Forward directly to your employer or HR. The QR code allows instant verification without any follow-up call.
