You can buy special tick tweezers from the chemist, or just smother them in butter or vaseline (it blocks their spiracles) then twist off. Sterilse the area afterwards, as well. If you leave them until you get to a doc, you’re increasing your chances of catching something.
DONT Use Vaseline etc…. it causes them to be disturbed and can make them put nasties in you rather than suck blood. Gives you a higher chance of Lymes disease etc then!