I now have a working Iridium SIM from SatPhone (Callmonitor Ltd).
What a difference!
We ordered via on-line chat, with an emailed confirmation I had to complete (took a few seconds). The SIM was activated for us, and was biked over. They sent confirmation of order. They sent confirmation of SIM and number and so on. They use a courier with real-time tracking of the bike. They even had my POD in my email from the courier before I had walked back in to my desk with the SIM. The SIM just works.
They have the same package for a similar price, but apparently they send a proper VAT invoice in GBP and then DD the amount they invoice. What a novel idea!
Overall I have to say very slick indeed. Well done.