Hang on! They haven't even bought them yet.
No, and if they do their due diligence properly (as I expect, it's BT and they're not stupid) then Orange/T-mobile/EE will get hammered, and rightly so. Frankly I think the whole shenanigans (and that's the right word for this cobbled-together outfit) needs to be ripped apart and rebuilt from scratch. EE never had a future (nor Orange in FT's hands, but at least they ditched that advertising moniker, which was never so inappropriate). The mobile Pipex. And there's a lesson for BT.
We see things not as they are, but as we are . - Anais Nin