Hi Tipit.
Earle’s Cement were originally at Hull,near Melton I think - Wheelnut will know. The cement works at Hope,Derbyshire were known as Earle’s Cement when I was a young 'un in the 40s and 50s.All the wagons had Hull regs,mostly Leyland Comets.I think the name changed to The Cement Marketing Company,then Blue Circle and it was Lafarge last I heard.
The railway sidings at Hope Works are still known as Earle’s Sidings to this day,and still used too.