Cambridge Aerospace, a British defense technology startup, is in discussions to raise roughly $300 million at an estimated valuation of around $3.5 billion, according to people familiar with the matter cited by Bloomberg. The company develops interceptor systems designed to protect against threats including drones and cruise missiles. The talks reflect a planned funding round at a substantially higher valuation than a year earlier, as reported by The Next Web. The Next Web, also referencing the Bloomberg report, says venture firm DFJ Growth is in discussions to lead the round, though specific deal terms and timing were not provided in the available excerpts. Both sources agree on the scale of the planned raise, the approximate valuation figure, and the company’s focus on drone and cruise-missile interception technology. No additional information is included here on investors other than the possible role of DFJ Growth, the expected closing date, or the exact structure of the financing.