Here's how they've been ordered - according to their results. Candidates are awarded five for a PM win, four for a team win, three for a team lose, two for being brought back into the boardroom and one for losing as PM. I've also averaged them out, though I'll give the overall totals.
1st Katie - 30 pts.
2nd Bianca - 29 pts.
3rd Solomon - 27 pts.
4th (tied) Daniel, Felipe and Roisin - 26 pts.
7th Mark - 25 pts.
8th Sanjay - 26 pts.
I've also done a chart I can upload later.

Deleted - after thinking about it, I no longer agree with what I said.

Sorry, I realised you'd done it and I'd started doing it since the beginning of the episodes. Wasn't copying you!

That wasn't what I said, actually. I made a point about thinking that most of it is accurate apart from Bianca, and then I retracted because actually I think quite a lot of it doesn't reflect actual performance.

Yeah, it's not an accurate representation really. Jemma had been on the winning team for the first four weeks though was condemned for doing very little. Katie, on the other hand, has been on the losing team for three weeks, though has never been back into the BR - which is a much bigger accomplishment.

I assume Sanjay is not on 26 points.
Would seem harsh to put him in 8th if he has more points than Mark

Whoops. He has 24. Thanks for pointing out my mistake

The scoring system seems somewhat arbitrary.