Okay.. In 14.5", TM Fully Fitted is significantly slimmer than Marks & Spencer Slim.. However, I think that Marks & Spencers Shirts might be okay after first wash, so I will keep one to try. Like the bigger cutaway collar, but the cuffs are nicer at TM Lewin (not glued and somehow smaller - look and feel way better).
We will see.. CT is far too big, especially the armhole and cuffs. Quality was nothing special either - I think TM Lewin could be a good deal (if my shirts do not shrink more...).