Mark Coles profiles the Labour leadership contender Liz Kendall.

The shadow care minister was virtually unknown outside Westminster until the last week or so. Now she's one of the bookmakers' favourites to take the party's top job. So what's she really like?

"Zesty."

That's how her best friend sums her up.

But, as Profile discovered this week, figuring out what really makes Liz Kendall tick isn't easy.

Producers: Hannah Barnes and Joe Kent.