Smart fraud detection platform for payments Ravelin has raised £8M in funding from investors that include Amadeus Capital Partners, Passion Capital, Playfair Capital, and BlackFin Capital Partners. Founded by Leonard Austin, Mairtin O’Riada, Martin Sweeney, Nick Lally, Stephen Whitworth in 2014, Ravelin has now raised a total of £12.3M in funding over four funding rounds.