Should I become an Actuary by taking an apprenticeship, or going to university?Watch
Quick guides to apprenticeships
To begin with, companies sponsoring apprenticeships are usually doing so for their own benefit, and would likely prefer to recruit their apprentices directly at the end of their apprenticeships so as to benefit from all the training they funded for the apprentice (both in general and anything specific to that company's work processes). Even if you did look for roles outside of the company you did the apprenticeship with, you are qualified as an actuary so shouldn't have any issues on that front, but more importantly you will have years of relevant work experience under your belt that you can leverage through your CV, covering letter, and in interview to demonstrate with specific examples why you are a good person to hire for a role.
Something to note though is that the two routes are not necessarily mutually exclusive; one can do a degree then an apprenticeship (and it seems there are level 7 actuarial apprenticeships designed for graduates, as well as for non-graduates), or one can do an apprenticeship then a degree. However due to the funding models for degrees an apprenticeships, if you were to start one then stop and swap to the other, it would be better to start in an apprenticeship then go to a degree (either after the apprenticeship or by leaving it before completing the apprenticeship) than the other way round, as if you changed your mind again starting in a degree you may find yourself having to self fund some of your degree study.