Get all the latest politics news straight to your inbox with our bi-weekly newsletter Birmingham MP Liam Byrne used parliamentary expenses to help his failed bid to become West Midlands Mayor, an investigation has concluded. The long-serving Labour politician allowed a member of staff to work on his mayoral campaign, going against parliamentary rules stating they should only focus on constituency matters. That was the verdict of the compliance officer for IPSA, the Independent Parliamentary Standards Authority, which launched an investigation following a complaint over the running of Mr Byrne's mayoral campaign. The Hodge Hill MP's bid for Mayor ended...