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But … the first sentence refers to recording at BG, the second sentence then says “now off to record with Tom and Graeme” - which I would take as a separate different session or project. So I’d say they’re not on the album.
Yes, this doesn't necessarily mean it's for Mark's album, it could be something else and they are recording at British Grove, it's a bit ambiguous. It could just be wishful thinking on my part though, I just hope it's no for Mark's album!!!