Thank you for taking the time to provide this feedback, although we are sorry that you have not found the perfect fit from either your original order or your exchange order. Having reviewed both purchases, it appears that when you exchanged for the narrower Slim Fit, you also opted for a narrower neck size. Our shirts are manufactured in such a way that the broader the neck size, the broader the body.
You may therefore find that the Slim Fit size 44cm collar may be the better fit, slimmer than the Classic fit you initially ordered in this neck size but broader than the size 43cm from your original order.
You can find all those available in your size here: https://www.charlestyrwhitt.com/au/mens-shirts/slim-fit/?prefn1=length&prefv1=97%20cm&prefn2=width&prefv2=44%20cm&ppr=4&tib=TIB-text-shirts-ss23&isFiltersHidden=false
Please make use of our 6 month guarantee with cost free exchanges to switch for an alternate size or to return for a refund. We hope you will give us the chance to restore your faith in us soon.