CacheLogic, a Cambridge, UK-based start-up that sells IP traffic inspection technology products says it has raised $20 million in Series C funding round led by Amadeus Capital Partners. Existing investors 3i, Pentech Ventures and The Cambridge Gateway Fund also participated in the round. The company has raised around $30 million in three rounds of financing.

The money will be used to build out the sales team, and add more depth to its portfolio. The four-year-old company is well known for releasing traffic analysis data on various peer to peer networks. It is now working on developing new products that track online video. As the traffic on the broadband networks goes up, expect the packet inspection business to get a bump, and perhaps more start-ups are going to jump into the fray.