Taqi al-Din al-Nabhani was born before the Great War, in Ottoman Palestine. He lived through the British mandate years and beyond the proclamation of Israel in 1948.
He authored a number of books and his focus became the establishment of the khilafa. In the 1950s, he founded Hizb ut-Tahrir in Jerusalem. He spent his last years in Lebanon.
How much of Hizb al-Tahrir is a product of Nabhani’s thinking is uncertain, but the loss of his homeland, during the rule of the British Empire, might of contributed to the HT notion of a British conspiracy against the Ottoman Empire.
Sources:
https://www.icct.nl/publication/problems-banning-hizb-ut-tahrir-britain
https://www.thenationalnews.com/lifestyle/travel/ticket-to-ride-how-projects-hope-to-restore-life-to-hejaz-railway-s-abandoned-tracks-1.962732
Arabian Misadventures 