I rang the 0203 number for Park Royal in the pinned thread, and it went through to a central call centre, not Park Royal.
Spoke to an advisor who informed me that a few SC's were showing the harness in stock, but he couldn't see/tell I'd they had been allocated to a customer job or not.
Anyway, he promised to speak to PR and that I'd get an update.
A couple of hours later, I got a text from PR saying they'd found a harness in the Dartford SC and would update me re availability, about 30 mins later, got another text saying that the harness was allocated, so no joy!
Have now been promised that I'll get daily updates! Don't know why it took a call to Tesla to jolt PR into some kind of action, meanwhile the wait goes on 40 days and counting....
Meanwhile the 67 plate Model X I have is keeping me mobile, free supercharging is a bonus, but my god does it take ages to charge, and I can't get up to Leicester and back without needing to stop and charge!