Rory Stewart likes to walk around London. So do I. And so, a few months ago, someone on Twitter gave me an idea for a fun wheeze: that we could walk together and turn it into a podcast.

That walk will, hopefully, happen soon. But in the mean time I've been out and about with a number of the other candidates to be mayor of London.

So this is the first of a mini-series. My companion on this walk, which took place last November, is the Liberal Democrat candidate Siobhan Benita. She took me to the Latin American market in Seven Sisters, which is currently under threat from developers, to talk about gentrification, housing, and all the things she'd hope to achieve as the mayor of this fine city.

The next walk – though not necessarily the next episode – will see me wander through a different stretch of North London with the Green candidate and that party's co-leader, Sian Berry.

Skylines is the podcast from CityMetric, the New Statesman's cities site. It's hosted by Jonn Elledge and produced by Nick Hilton.

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