[supertv247]

Here's how the last 4 series have done. Overnight ratings with the official rating in brackets

CBB17 average - 2.26 (2.83)
CBB17 launch - 2.80m (3.30)
CBB17 final - 2.70m (3.01)

CBB18 average - 1.57 (2.10)
CBB18 launch - 2.36m (2.71)
CBB18 final - 1.80m (2.14)

CBB19 average - 1.78 (2.37)
CBB19 launch - 2.32m (2.77)
CBB19 final - 2.19m (2.56)

CBB20 average - 1.31 (1.78)
CBB20 launch - 1.80m (2.11)
CBB20 final - 1.80m (1.80)

Using this info, I predict a launch of 2.4m (2.9) and a series average of 1.95m (2.45m) - I say this because I think the new eye and very controversial theme will get a little more than last years series did, plus coming off CBB20 which went down well
(I feel CBB19 was down because the gp just don't like all stars, and because it followed Bear) although I don't think it'll reach CBB17 levels due to how low BB has generally been in 2017.