In the House of Lords (the transcripts were posted earlier in the thread) as well as the House of Commons, representatives of the government and of the main opposition party laid stress on the Palace's confirmation that in the future, only working members of the Royal Family will be called upon as Counsellors of State. So, although the rule of only calling upon "working royals" has not been enacted into law as some here have suggested, it has been formalized as a promise made by the King to Parliament, which ought to be taken seriously. (Thus, I think we can safely assume that Princess Beatrice will never be called upon to act as a Counsellor of State.)
Transcript of the debates on the fast-tracked bill in the House of Commons on December 1:
https://hansard.parliament.uk/commo...5EA-83A86027A18E/CounsellorsOfStateBill(Lords)
https://hansard.parliament.uk/commo...B70-98F121FE5916/CounsellorsOfStateBill(Lords)
From the Commons Second Reading:
The Chancellor of the Duchy of Lancaster (Oliver Dowden): "Furthermore, the royal family has confirmed that in practice it will be working members of the royal family who are called on to act as Counsellors of State,
and that their diaries will be arranged to ensure that that is the case."
The deputy leader of the opposition (Angela Rayner): "The Opposition do not oppose this practical measure. Although the Bill has a narrow focus, I know that hon. Members in this House and the other place have raised concerns about the wider issue of the Regency Act. I welcome assurances from Government Ministers in the other place that only working royals can act as Counsellors of State.
That is an important assurance that will go alongside the Bill."
The enacted Counsellors of State Act 2022:
https://www.legislation.gov.uk/ukpga/2022/47/contents/enacted