just to provide another contrary opinion :) don't overthink it - you're new to road bikes so the position will take some getting used to and you might end up wanting/ needing a different position in 6 months as you want to drop the bars, get a longer stem and raise the seat...
jus find one that looks good and fits well enough.
£1,500 will get you a nice bike. I would personally choose from:
just to provide another contrary opinion :) don't overthink it - you're new to road bikes so the position will take some getting used to and you might end up wanting/ needing a different position in 6 months as you want to drop the bars, get a longer stem and raise the seat...
jus find one that looks good and fits well enough.
£1,500 will get you a nice bike. I would personally choose from: