The market has doubts
There are a few thoughts by way of the cable market for the moment as it bounces back to 1.3561 from as low as 1.3488 that Can be talked about.
There was a report that she would threaten to leave the EU soon and that would have been GBP-negative. But it was ridiculous to report to begin with (even if it is from a credible source).
The news is that May wants to stay for another two years, which will probably turn into another 10 years. Each day, it is a slow slide into staying after all.
Really, I don’t see a reason to sell GBP in the speech.