Europe's popular challenger banks Revolut, Monzo, and Starling are in a fundraising arms race. Here's what we know about the mega-rounds.

· *The buzziest challenger banks in Europe are in a fundraising "arms race" as they gun for international expansion and growth.*
· *Revolut, Monzo, and Starling Bank are all challenging incumbent high-street banks in the UK and Europe, and the three are set to raise new tranches of capital.*
· *Monzo was reported to be in...