I don't like seeing the UK go to an almost whiff. It did well last system and from my experience, does well with phasing.
I definitely do not trust the GFS. Its almost always playing from behind but this is a very tricky situation that all depends on small changes.
With the last storm I think both GFS and Euro struggled in different aspects. The Euro caught on to the more amped idea earlier but was terrible with CAD. The GFS took way too long to figure out the storm track but modeled the CAD better.
As @BooneWX said, we may have to wait until CAMs range for this one. The upper low will have some smiling and some swearing to never trust a model again.