Here's my Crazy Scan 2 report for West London https://imgur.com/a/NDkdp
COM 8 is defintely much more marginal, and COM 7 is effectively invisible. (Crazy Scan 2 with Air Scan output)
Yes, for the benefit of others the tops of each mux should be totally flat, but they rarely are in reality.
Both COM 7 and 8 are in bad shape, COM 8 is so distorted it's obviously unrecoverable.
I note a nice 4G phone signal at 795ish MHz