Jane's Walks: What about London?

Lots to do in London this weekend, but in other cities across Canada they're having Jane's Walks! Named after well-loved urbanist Jane Jacobs, these are walking tours of urban spaces led by community members. Anyone can organize a tour, and it attracts a wide range of interested and interesting citizens. This year in Toronto, for instance, anti-poverty activist Gaetan Heroux is leading a tour of Toronto's "skid row;" Jason Kucherawy is doing a graffiti tour that includes Rick Mercer's "rant alley"; former Chief Planner Paul Bedford is leading a tour of King Street explaining rezoning policies (ok, this one might be more for planning nerds); and the awesome grade 4/5 class at Dovercourt Public School is hosting a tour/ performance piece of their neighbourhood as a Sesame Street-like utopia. Check out Torontoist.com for a list of inspiring tours.

I notice London isn't on the list of cities offering Jane's Walks (though Kamloops and Esquimalt are there). Does something like this exist in London? Has anyone tried organizing this before? Should London have something like this?