90=.Julian Huppert, Politician

The Liberal Democrat MP for Cambridge is a life-long resident and scholar of the city. He was also a councillor there before winning a seat in the Commons in 2010. Unsurprisingly, he's a keen disseminator of news about the city. Huppert is also co-chair of the All-Party Parliamentary Cycling Group and he's used Twitter as a key part of the group's work on cycle safety – which has been especially prominent during The Times' recent campaign on the subject.

Tweets as: @julianhuppert Peer Index: 53 Authority: 50 Activity: 71 Audience: 59 Follows: 105 Followers: 5,963