The leading young earth creationist organisation is the multi-million pound venture Answers in Genesis founded by Ken Ham over thirty years ago.
Ham, an Australian, hasn’t recently partially retired and handed over to another Australian. AIG is dogmatic on the earth being a few thousand years old and dismiss any Christian who dares to believe that the earth is millions or billions is a compromiser i.e a heretic, and brooks no dissent. Their arguments are dubious and duplicitous.Yet too many think their approach is wonderful, including some Church of England churches and their vicars. The latter get riled when you question them!!
After a short introduction Joel Duff gives a good expose on a podcast
Peddling and Scaling God and Darwin 