[Mac Hiavellian]

It's a tough one because it's all about a difference of opinion, some HMs are fresher in memory than others, it was a short series, and the number Celeb HMs were met with criticism.

IMO Preston was not a classic HM, and served no purpose other than creating cheap, awkward will they/won't they exposure for him and Chantelle. There was no need for 2 representatives for CBB4.

Ulrika or Coolio - both love or hate figures. Ulrika, a moany cow, and Coolio an argumentative chauvanist. Again, it didn't require 2 representatives for one series and CBB6 isn't regarded as one of the best BBs, in fact it was the frst series with no LF and wasn't as big a comeback for CBB as hoped.

Nadia, Victor or Michelle - I liked them both. Victor contributed a lot, and Michelle was also more likable for me this time around although she really didn't do much. Nadia was already in there so neither of these 2 should really have gone in. Or perhaps have 1 of them instead of Nadia in the first place. I love Nadia but it's clear she wasn't in the right state of mind to go back in (even Come Dine With Me was evidence for that)

So, removing Preston, either one of the CBB6 HMs, and 2 of the BB5ers leaves 4 places that could have gone to more deserving former HMs, each of which could have represented a different series. Anyone from BB3, 4, 8, 9, 10 primarily, and CBB2, 5 or 7 as a last resort.