ProjectZ have undertaken some "unofficial" visits to some of these stations. Specifically Wood Lane underground station, and the abandoned part of Holborn Station and the adjoining world war two bunker. There are also some other interesting urban explorations on this site.

Um, I've previously had non-firewalled public machines on the net whose last hop was wireless - they had no problem at all running the usual range of service.

I also have an iPAQ running Linux, and part of the reason I like it is that it's more powerful than the Acorn (ARM-powered) workstation I was still using as my main machine a couple of years back.