I've taken a quick look at the "usual plots" and see nothing particularly concerning.
I concentrate on the two that provide information about the state of the metallic pathway -- the Hlog & QLN plots. The former is as good at it gets, whereas the latter shows that your circuit exists in a somewhat more noisier environment than usual. A good "noise floor" would be around -140 dBm/Hz per sub-carrier.
As you quite rightly assume, G.993.5 (a.k.a. vectoring) is keeping the effect of extraneous noise (NEXT, FEXT & RF ingress) under control.
I see that you circuit currently shows as 122/30 Mbps DS/US attainable, 104/11 Mbps DS/US synchronised. Not knowing how Manx Telecom provision their circuits, I shall just slightly raise an eyebrow at the approximate 9:1 asymmetry ratio of the synchronisation speeds.