Finding a surgeon/oncologist

Hi everybody, I hope everyone has found something to smile at this weekend, even if just once. 

I'm starting my journey and have been advised to do my research into the best colorectal surgeons/oncology team I can find.... does anyone have any idea how I might go about this please? I literally don't have a clue where to start, short of putting that phrase into google (!) 

Any help or pointing in the right direction would be much appreciated. 

Thank you.