UK nationals living in the EU/EEA will qualify for Home Fee status until 2027.
Please read UK Gov page on Living in Europe (there is a section under the heading 'Returning to the UK for study')
The detail for UK students is on the following pages:
Please also read this page.
Applying for a UK passport
If you are able to do so, we recommend applying for a UK passport.
The Cambridge application process takes a year so please don't be concerned about any current delays - there should be time to get a passport if you are eligible for one.