I've ridden on Class 444s too much obviously then! They are the SWT units with the doors at the end (and these a 'compartment doors' even us 'lowlings' in standard get), which can be seen in the fact the grey doors are right behind it. They are obviously SWT as I could tell easily, being my most frequent travel TOC, as the First class seat design (even though I haven't travelled 1st) is distinctive, and very different, as I see when walking through to find a seat! Open floor anyway, as I haven't been on a train (or even near the railway) since the 20th January and my last journey, before this thread was created and I could think to take a class photo.