As I have said, I am not able to share my assessment, but perhaps it might be useful for the House to know when a section 19(1)(b) statement has previously been used. It was used in relation to the Communications Act 2003 by Tessa Jowell, who used words very similar to mine just now:

“That does not mean that we believe the Bill to be incompatible…and we would mount a robust defence if it were legally challenged.”—[Official Report, 8 December 2002;
Vol. 395, c. 789.]