Interesting, they are starting the next bay back, up at level 4/5 and working back down the way, rather than from the ground up.
In the last drone video from Friday I noticed the foundations for the next bay back were not fully formed with the pad and bolts up to take the next colums. They seem to be using that stretch as a bit of a thoroughfare for moving machinery and material. Just assumed they wouldn't get to that bay (which will be the main roof support at the top) till they clear room for themselves, but just a day later, they are on it but starting at a high level! Whoever is in charge of the phasing of this must either be absolutely loving the challenge, or hating it.
It is getting to that stage now where a couple days here and there can make a noticeable difference, with the pace this phase is going at.