A reminder of the 7 Nolan Principles, with which membership of any scheme conflicts:
www.gov.uk/government/publications/the-7-principles-of-public-life/the-7-principles-of-public-life--2
Most obviously, being in a SW-like scheme conflicts with integrity:
"Holders of public office must avoid placing themselves under any obligation to people or organisations that might try inappropriately to influence them in their work."
And of course with objectivity:
"Holders of public office must act and take decisions impartially, fairly and on merit, using the best evidence and without discrimination or bias."
Public office holders must also be selfless:
"Holders of public office should act solely in terms of the public interest."
The SW scheme is in conflict with all of these things. It would be the same if the Lords decided to take part in a GC scheme or a CRT scheme, or a scheme run by a religious organisation/constellation of religious organisations.
The question is - how and why were they ever in the scheme? The Committee on Standards in Public Life should investigate to stop this ever happening again.