All the roles described have 'clients', it will just that some clients will be internal (either same office or another UK office or an overseas office). Client relationship skills will still be required for all of these.
Rather than ask whether roles are likely to be client facing or otherwise, perhaps focus on what the working day will look like.
JPM FS: Based in the complex in the Bournemouth suburbs; you, your peers and bosses may be in the office all or only part of the time (PP can offer insight). Study is block release residentials at U of Exeter, I think (happy to be corrected).
KPMG Audit: If audit, likely to be some physical visits, some time in Manchester city centre office, some home working (mix can vary by client size, sector and location). Study mostly at home with some intensive off-site pre-exam prep sessions.
PwC junior consultant: Pre-covid this was a mix of office (Manchester city centre in this case) and client site providing admin support to the team. Not sure what it would still be the case now. The Manchester office consultancy area might be fairly quiet if a fair proportion of consultants at client or homeworking, but that will vary according to office culture. Study mostly remotely delivered, I think, for this one.
Lloyds internal audit: Based at Bristol office in harbour area but you, peers and seniors may not be in the office for a fair portion of the week, depending on culture and expectations. Study set up similar to KPMG pathway.
For PP who are ACA and extoll its virtues, bear in mind that KPMG school leaver audit is AAT and then ACA; there are exemptions but there will still be more than the 15 exams you had to pass! So you need to be engaged and committed to that route and all that goes with it.