Nationality and Borders Bill - amendment to fix the CSI legacy

Writing to your MP

Write to your MP about CSI:


  1. Find your MP here. Identify their email address.

  2. Read the draft letter below.

  3. Consider writing a personal and unique letter as it will likely be far more effective. If you are not feeling inspired, you can copy and paste the text below in an email.

  4. Add your MP’s name after “Dear”

  5. Sign the email with your name and your full postal address to prove that you are their constituent.

  6. Send the email to your MP’s email address and consider copying in the email so we know which MPs have been emailed.

Dear XXX,

I hope you and your team are well!

As a resident living in your constituency, I would like to bring your attention to a campaign by the3million on addressing the legacy of Comprehensive Sickness Insurance (CSI).

As you know, the Nationality and Borders Bill seeks to end the historic anomalies in British Nationality Law. I believe it is the perfect time to fix the unfair, and now obsolete, legacy of CSI affecting EU citizens’ path to British citizenship and family reunion rights.

For years, EU citizens have made the UK their home.

  • Many parents want to see their UK-born children receive the automatic citizenship they understand them to be entitled to. 

  • EU citizens don’t want to find that if they do become dual citizens, they then inexplicably lose family reunion rights that were guaranteed by the Withdrawal Agreement.

  • Many identify as British and wish to officially become citizens of the UK, and don’t dare to risk the expensive fee and rely on a vague discretion. 


However, many EU citizens are affected by the CSI requirement. 

  • A historical absence of CSI means some children born in the UK are unexpectedly prevented from having automatic British citizenship and instead have to pay over £1,000 to become British. 

  • A historical absence of CSI removes a naturalised EU citizen’s rights to family reunion. 

  • There is some caseworker discretion to allow EU citizens without CSI to naturalise, but the discretion is vague, many don’t dare risk the high fees and in any case naturalising can lead to loss of family reunion rights. 


Like most, EU citizens pride themselves in respecting the rules of their country they call home. It can be distressing to learn that a requirement you were never made aware of affects your lawful residence in the UK.

Write your own example here. 

If you need ideas, check our briefing paper at

If you don’t have a personal example, use this template: 

For example, Roberto is a Portuguese national who studied in the UK full-time before the birth of his child. Even though Roberto had been living in the UK for over 5 years, his child was not automatically born British because Roberto did not have CSI during the time he was a student. If it wasn’t for CSI, Roberto would have been considered as settled and his child would have automatically been born British. 

CSI is a legal issue which needs to be addressed through change in legislation. 

In the upcoming report stage of the Nationality and Borders Bill, there will be an amendment which seeks to address the CSI anomaly. Many organisations have signed an open letter in support of their proposal.


I encourage you to support this amendment. The Nationality and Borders Bill should be amended to resolve the CSI legacy by ensuring compliance with the CSI requirement is satisfied by having had access to the NHS in practice.




Please read the3million’s briefing paper on the proposed CSI amendment at You can contact if you have any questions about the campaign or if you would like to support their work.

Yours sincerely,