Kenwood: the boot gets the boot.

So, what became of the boot? Local magazine Surrey Life has uncovered the answer. It turns out the boot was at Kenwood for no time at all.
To be brief, John quickly grew tired of it, and so it was donated to the local Rag Week (an annual event where British students raise money for charity, often by being irritating). In this case, the boot was hollowed out, put on wheels, and pushed to Luton in a sponsored event. What became of it thereafter I don't know, but it probably didn't survive. A fitting end, somehow.