Re: WTF??
Possibly not: under UK rules they'd probably pass under the foot-launched-aircraft exception (I need to check the wording, but afaik with one special exception that's basically anything under a certain weight that doesn't have wheels).
The rest of the Air Navigation Order applies, though (someone was fined fifteen hundred quid recently for being in a CTA without permission) and I suspect the insurance requirements would be, um, interesting.
But as the ANO states: you can't overfly cities or groups of people, which will make commuting problematical.
Biting the hand that feeds IT
