Connection to AAISP has gone live.
Headline latency slightly worse than Zen for London gateways (7ms vs 4-5ms), but obviously no Manchester lottery. Throughput not quite there with default login details, around 750-800Mbps. Changing to the test login, hits line rates in excess of anything I've seen before (930Mbps+), across most speedtest servers. Looks like my "normal" login is going to one of the older gormless LNS, which is I think unexpected for FTTP900. The test- login puts me on b-doubtless. I've already got in touch with AAISP, so I'll see what they say. Appart from anything else, I doubt other residents of s.gormless will appreciate me doing FTTP900 speed tests!
Most notable improvement at the moment is that my IPSEC site to site VPN between my office and home has more than doubled in SMB throughput across the link, was 4-5MB/sec, now hitting 10MB/sec. That's an awesome result, and well worth it. I was seeing the 5MB/sec cap on VPN even when on Zen's BTW network.