Cheers for all your advice.
I spent the last month in
Evans' Manchester undertaking a thorough a "by eye" and then laser bike fit, doing test rides and detailed assessment for an angled stem.
I have decided on the domane sl6 disc with ultegra pedals, sks stealth mud guards, giro shoes. I will probably fit a Sqlab active seat in a while as the bontrager is not to my fit.
Evans' also gave a "sitting bone" width fit which was helpful.
I was initially a little wary of using Evans' but thanks to the patience and expertise of Dan and Hannah in the Manchester, Deansgate shop I now have a bike which is comfortable and with only an inch or so difference between this bike and my marin hybrid in the critical handlebar height and reach dims and enabling me to stick to a sportive bike even given my dodgy back!
I also purchased all these items using "price match" which saved me £600 ish against the December prices.
LESSONS I've learnt - much perseverance, research, take informed advice, use a bit of cheek and time to assess correctly for yourself and what suits you not others!