………

This is for the London office for BCG:

Its a little out of date, was passed around fairly recently.

I don't know how to upload the pdf here, but feel free to PM for more details

The BCG resource above is good. Assuming you’re at a full consulting target (Warwick is not a target, unlike finance, and UCL has not been a full target for BCG (and Bain?) but is for McKinsey), you should get the online tests given you have internship experience. These aren’t easy, and a lot of people from targets fail these. 
 

Only thing I would say is get someone who has been through consulting recruiting successfully to look over your resume. A different style is needed to finance, much more results driven. Also don’t make all your bullet points finance focused, display yourself as a generally interesting person (sports, volunteering, etc). Societal/voluntary leadership roles (as the BCG thing shows, but same across all MBB) are an important thing to have on your resume and pretty much essential for personal experience interviews.

Link for the above BCG pics in higher resolution (although it appears the other guy has slides I've not seen before): 

https://ibb.co/album/ChVCJg

I'm at a non-target outside of UK, no banking/consulting internships in the past and I've gotten first rounds for all 3. Definitely can't be that hard if I can do it. I'll get rejected next round though most likely.