OK, thank you. I read the following here:
https://www.tsoshop.co.uk/article/63643 ... rd-Edition
"Addendum
On 31 January 2020 the United Kingdom left the European Union (EU).
Sections of the handbook, Life in the United Kingdom: A Guide for New Residents 3rd edition, which refer to the UK being a member of the EU and its institutions, are out of date and have been removed from subsequent prints of the handbook.
You will not be asked any questions on the EU or the UK’s relationship with the EU as part of the Home Office approved test based on the current (3rd) edition of the Life in the UK handbook.
Home Office, January 2020"
So, my understanding is that the book is essentially the same, except the sections referring to UK being a member of EU which have been removed, and that there are no new sections on post-Brexit UK-EU relationships, nor will there be any relevant questions in the test. I just wanted a confirmation, just to be sure. Thanks.