Originally Posted by ThatT1Feeling

Ye, it exists. You can't however directly extrapolate your level (CIV score) to a likelihood of upgrades - as you have already indicated some Silvers may get upgraded over Golds, however a high Silver's CIV will always be lower than a low Gold's CIV under the current system.

As a Gold, your score will be somewhere between 56?? and 96 I think.

GGLs are 97-99

GGLs for Life are 100

Prems are 105 I think

In order to find out your number, you could ask the senior cabin crew member on your flight whether they will tell you, or you could write to BA requesting it - you may have to pay for the privilege.

However it's essentially a relatively useless piece of information in itself, as how it's used in practice is a mystery to most of us, especially when it comes to upgrades.