sigh OK for the hard of reading or understanding, as you seem to be having problems with a pretty clear and simple question, let me try and further clarify. Size is not the issue - after 30+ years of dressing myself I have amazingly enough worked out that if size X is too small then get size X+1 - fit is the issue. So let me give you a scenario and see if that makes it through the synapses.
I have an impending interview so I head to nice middle ground M and S (if M and S hasn't made it to the states it's a mid range fairly dull clothing outlet that produces innoffensive and unexciting stuff) and grab a shirt and suit trousers and jacket. When I try them on I find that a shirt that fits the chest and where I can do up the collar to wear a tie makes me look like I have sails at my waist.
Trousers that don't stretch round the thighs like mis-shapen sausages require a belt cinched in so much that I have a rouched waistline and a suit jacket that fits the shoulders looks like it's trying to be double breasted at the waist. All in all not the professional type of look that I am trying to portray. Looking at the shirt it's pretty obvious what's going on as the seams drop in a straight line from the shoulders - OK if your straight up and down but not if you have any other sort of shape.
OK is that now clear - this is not an OMG I'm so huge I can't fit into my clothes without hulk-esque ripping thread. What I am asking (and I thought pretty clearly but obviously not) is does anyone know any standard outlets in the UK who cater for people who have even a slight taper to the torso.
Now is that now clear or do I have to reduce the syllable count?