My bag turned up this morning. If I'm reading the site correctly, it actually turned up last night, and they handed it off to a next-day-delivery courier. One of the things in the bag was my office phone, which when powered on, received a text message saying,
"Welcome from O2. You are now roaming on the %%Network%% network. [-]"For good measure, they send me the same message an hour or so later, complete with the same "%%Network%%" bit in it. CODING FAIL.