@Ekofisk I must have been thinking of this (from rollonfriday.com),
The Solicitors Regulation Authority declined to clarify whether or not it was still a Diversity Champion. A Law Society spokesperson said, “Like most organisations the Law Society regularly reviews its memberships as they come up for renewal and we will do this with Stonewall as usual”.
It's a couple of law firms like Moon Beever of Gray's Inn that have definitely left.
I wonder if the Law Society will quit the scheme, now it itself has had to contradict Stonewall's expensive, incorrect advice?