Here's the full quote: "We are looking at how the richest 10% of people, those earning over £50,000, could make a further contribution. The vast majority of people in the country would consider £50,000 a very large salary: these are not the middle income earners."

I would disagree with that. I would say that £50k is very much a 'middle income', and a sum that a huge amount of people believe they are capable of earning or aspire to earn, even if they don't earn that much currently.

It's a rather bold line for the Lib Dems to take, really, given its inherently anti-aspiration.

http://www.cityam.com/blog/1379326626/lib-dem-lines-take-interviews-full

Hmmm, interesting...