Online vs face-to-face practice?

Hi!

I managed to receive an offer both from Mckinsey and BCG without having done a single mock interview with anyone :)

Thus, believe me, it is now fundamental for you to practice with someone.

The only difference I can see from online vs. face-to-face practice is that in the online one, the mock "interviewer won't be able to see you writing (e.g., structuring revenues-cost, doing calculations) and it's more difficult to analyze tables, graphs and so on unless they are provided electronically.

You can always remedy this showing what you are writing and data tables/graphs to the camera. Therefore, I can't see any counter-indications in doing it online if you are not able to do them face to face.

I also saw a few first-round interviews conducted via Skype due to the impossibility for the candidate to be in person for the first interview (e.g., candidate working in Asia applying for a position in London).

I hope it helps!