I did walk along where the signal was most strong last night again, but the signal got weak quickly. There's no other mast not that far from it other than by new cross road - but each time I try to connect to it, I can't get any connection from it. Only eNB's 521278 and 521279 which is where I feel like gNB 600447 is (the one in the picture)
There is one the other side, but the signal is already quite weak from far enough I wouldn't have said it was there.
(the other mast on the other side of it)
View attachment 21001
eNB's 511886 & 511887
Next time I'm over that way I'll go down Patricia Way (Pysons Rd) and check, it may actually be that one but I still feel like it isn't. Doesn't match up with the points already discovered