if we go back to yesterdays 12z from the GFS at +96 and compare it to the 12z from today at the same time frame, so 13:00 on Friday, you can already see the difference in the Atlantic, Heights are stronger further north and the features coming of the East coast of N America have a more negative tilt to them today.
This to me is a clear sign that the GFS was over progressive, I'm *not going to say it will swing to the UKMO completely, but it is moving towards it, no question about it.