It has now been four weeks.
There has been no invocation of Article 50. Nor does anyone even seem to care.
Oh, well, Brexit or (let's face it) no Brexit, what matters now, at least most immediately, is the giving of a voice to those of whom it was said that:
"The referendum result sent a clear message from parts of Britain that have been left behind by globalisation."
If you need to, then look up who said that.
He also called for Article 50 to be invoked four weeks ago today. The only day on which it ever realistically could have been.