So are you trying to say that I only need to get my bachelors degree and then go into an accounting firm?Sorry, I didn't make myself clear: you only need to get your
A Levels and then go into an accounting firm. You can have any degree you want (even a PhD), but they will only look at your A Levels in terms of qualifications.
The only time where they will require an accounting degree (undergrad or postgrad) would be if you work in the US or Canada, where they will require you to have done your degrees in a recognised US or Canadian university (as far as I know). These degrees can't be in PPE.
See the following:
https://en.wikipedia.org/wiki/British_qualified_accountants#Audit_of_limited_companies (for the list of accounting qualifications; ignore CIPFA since that's only for roles in the public sector)
https://www.icaew.com/regulation/qualifications/aca-entry-routeshttps://www.accaglobal.com/uk/en/qualifications/glance/acca/minimum-entrance.htmlhttps://www.charteredaccountants.ie/Prospective-Students/Entry-Routeshttps://www.icas.com/become-a-ca/routes-to-becoming-a-ca/how-to-become-a-chartered-accountant-ca-by-the-school-leaver-route (
https://www.icas.com/become-a-ca/routes-to-becoming-a-ca/the-professional-entry-route)
https://www.aiaworldwide.com/aia-journeyIf so, how would I enter an accounting firm?You apply for an entry level role either as a college leaver or as a graduate (depending on whether you do a degree or not). They either have job openings listed on their website or they have graduate events. I would try to apply speculatively though medium sized firms though, since you might have more chance that way. I would also try to network as much as you can.
Because I know I need to work for about 2-3 years before applying for chartered accountant.Why? You don't have to answer me, but the hiring manager would wonder why you would and how you can explain that gap. Those who are enthusiastic and really want the role would apply straight after college or their bachelor's degree, with many trying to secure internships, insight experiences, and work experiences at the firms throughout their studies.
Accounting is one of those jobs where they expect you to be passionate and jump with both feet in. If you aren't, expect a very short tenure.
Would I need to enter through my university? Or on my own?This makes no sense. I have never come across any university in the world where they arrange your job application for you (unless you live in a country ran by a dictator and you are assigned jobs as opposed to being allowed to apply for what you want). You have to apply on your own.
do you think PPE would qualify me enough to enter an accounting firm?If you look at the entry requirements of the qualifications above, a college leaver can enter an accounting firm in terms of qualifications. In fact, even if you have nothing at all and the accounting firm specifically is very enthusiastic about you, they can fund you to study AAT before telling you to study a professional accounting qualification. They even accept school leavers.
Your PPE is more than enough, not because of the degree per se as opposed to your A Levels and GCSEs(or equivalent).