Silicon Fen is a region in and around Cambridge, England, known for its high concentration of technology companies and startups. The name is a play on Silicon Valley, reflecting the area's focus on innovation in fields like software, biotechnology, and engineering. It has become a hub for research and development, attracting talent from around the world. The area is home to numerous universities, research institutions, and incubators that support new ventures. Notable companies, including ARM Holdings and Autonomy Corporation, have emerged from Silicon Fen, contributing to its reputation as a leading center for technology and entrepreneurship in the UK.