Oxford English Proficiency Requirement

I have a question about English Proficiency Tests. In the Oxford Website, it saids that when submitting the UCAS application, the scores for English Proficiency are not required. Will it be a disadvantage if I don’t submit the scores when submitting UCAS?

While it’s best to submit the scores upon the submission of your UCAS so that there’s no question of your English proficiency, you can be extended an interview and conditional offer of admission before fulfilling the proficiency requirement.