History and Economics Oxford without ever studying historyWatch
You can always reach out to admissions/history tutors at various colleges and ask what they think. And you should be able to FOI request subject combinations and if someone got an offer
Unfortunately I think it would be quite difficult, though not impossible, for you to apply successfully without having studied History at GCSE or A-Level.
This is mainly because, as others have mentioned, the course is History AND Economics as opposed to Economic History or the History of Economics. As a result, unless you are genuinely interested in History, you might find the course difficult to enjoy. You'll also have to take the HAT as part of the admissions process which is essentially a test of the historical skills that GCSE and A-Level History are very helpful in developing. Furthermore, since admission to the course is more so determined by the History faculty, it is probably more important to show an intellectual curiosity for History than for Economics.
However, it is certainly possible to demonstrate your passion for History without formally studying it by reading History books on subjects that interest you, listening to podcasts like the BBC's "In Our Time" or entering essay competitions. You may just have to work slightly harder than other applicants to convince the tutors of your passion for the subject.
If you want to study specifically Economic History or the History of Economic thought, most straight Economics courses include options to explore those subject areas. For example, the Economics course at Cambridge allows you to take papers on "British Economic History", "History and Philosophy of Economics" and "Historical Perspectives on Economic Growth". You could also consider applying to one of the several Economic History courses at LSE, which I believe remains the only UK university offering an undergraduate degree in the subject.
Hope this helped, best of luck with your application