CT does really top quality shirts (beyond any reasonable doubt). Living in London,I have made several purchases over the years.
However,if you want added flare and versatility to your shirts,may I suggest my first port of call, Hawes and Curtis.
I love their Curtis Fashion ranges( esp the Brandon and Chelses ranges). Their ever revolving catalogue of shirts wear exceptionally well both in office and casual settings.The quality impeccable(to the point that they even offer a 90 day return guarantee).And that's not to take away from the formal selection-you are bound to be spoilt for choice!Delivery,swift across the world.I've bought family overseas shirts from Hawes and Curtis and they were delivered without any issues.Enjoy!