Any local branch of a political party that earns or spends £25,000 in any given year has to report their financial data to the Electoral Commission for public view. Here are the top earners for the Liberal Democrats.

1. Bermondsey & Old Southwark (£178k)
2. Sheffield (£163k)
3. Westmoreland & Lonsdale (£156k)
4. Twickenham (£137k)
5. Kingston & Surbiton (£107k)

For more details on previous years, see here.