Fornication is sex outside of Holy Matrimony. Holy Matrimony is between one man and one woman and you would be correct that coitus would be involved there. Fornication=Spiritual pollution in the Scriptures. And the Lord Jesus Christ equates it with evil (Matthew 15:19) and murder.
Police fear domestic disputes for this reason more than any other. For it produces more murders and/or assaults on officers than any other.
I am not sure that the Queen reads the same Bible as we do. We broke away from them because of their crazy Religious beliefs. They may be perfectly fine for England as they may not have the same teachings as we do. I know as a Catholic it is 100 percent known that gay marriage is a travesty. However some crazy religions throughout the World may not have the same teachings.