Geoff was as close to being the 5th Beatle as anyone. Geoff was there from the first to the last session. I've studied Beatles lore since I was a kid and the Beatles would not have been the Beatles without the EMI staff especially Geoff. They only recorded outside of EMI a few times which I suspect other studios just weren't up to snuff. I highly suggest the Beatles recording sessions book.
Wrap your brain around this and think about it Sgt.Peppers was recording on a freaking 4 track. Track bouncing bastards lol....
Thank you Geoff RIP.